On the night of the Royal Wedding, Hayley heads to a hotel room outside of Walford where it is revealed that her cousin Kat's husband Alfie Moon is the father of her unborn child after they had a on night stand in spain. The pair talk and Alfie asks about Kat because Kat's son Tommy, who is the biological son of Alfie's brother Michael Moon and Kat and Alfie's twin boys Ernie and Bert need to see their mum as Aflie is currently raising them after a fall out with Kat - which has made Kat refuse to even see her boys. Alfie tells Hayley he loves Kat but Hayley tells Alfie she thinks the baby is a girl and she could boss her big brothers around and Hayley will raise them as her own. However Alfie replies by telling Hayley that Kat is the boys' mother, not her. Hayley gets mad and wants to have an abortion but Alfie tells her not to but gives her the money after Hayley says its what she wants but she later changes his mind after Hayley talks him round. Alfie gives her the money and the next day Hayley makes an appointment at the hospital for a termination. Hayley then gets drunk and turns up late to her appointment, which makes them refuse to see her. She then makes a new one but changes her mind after Kat tells her she's a good person really. Hayley then moves in to her cousin Stacey Slater's house along side Stacey's children, Lily, Arthur and Hope, Stacey's husband Martin, Kat, Stacey's mother Jean and Kat and Stacey's nan Mo. Hayley was sent to walford by Kat to sort out Stacey when she was going through a tough time with Martin.
After Jean discovers Hayley is pregnant, she starts buying clothes for the baby, which gets Hayley mad as she doesn't want anyone finding out about her pregnancy. Soon, they agree to tell the whole family about the news. Hayley becomes friends with Kim Fox-Hubbard after they start going to mother and baby classes together. Stacey tells Hayley she can have Hope's old baby clothes, pram and Moses basket. Later Hayley's mother Bev Slater arrives on the square, promising Hayley that she is a changed woman and she came to see her because she found out she was pregnant. At first Hayley is very optimistic and mad to find her mother in the square. Soon Hayley asks her mother to prove she has changes and the pair go shopping together. After the shopping trip, they go to along to E20, only for Hayley to find out that her mothers intentions were to con money off the baby's dad. The pair cat fight and Hayley is just about to through a glass in Bev's face. However they are both thrown out by Billy Mitchell. Bev tells Hayley that she is just like her and the baby is going to end up just like Hayley. Bev then calls for a taxi and Hayley starts to bleed, but Bev smiles and says that Hayley should of got rid of the baby while she had the chance. She smiles and asks the taxi driver to pull away as Hayley sits crying for her mum in the middle of the street. Hayley then goes into town and gets drunk.
In October, Jean sends Hayley to go shopping and get everything she needs for when the baby arrives. Hayley becomes stressed in Honey Mitchell's shop when she cant figure out what size nappies to buy the baby. Honey tries to calm Hayley down just as Mariam Ahmed walks in. She tells Hayley to go home with her and they chat. Mariam asks Hayley to look after her foster child Harley, while she finishes cooking. Hayley does this and stops him from crying. Hayley then walks into the living room and spots some pictures of lot of children, whom Mariam and her partner Arshad have fostered in the past. Hayley spots this one child who suffers from deformations due to his mother drinking while she was pregnant. Hayley tells Mariam how her and her mates used to make fun of this girl at school because she looked like that. Then Hayley becomes upset that her baby might have this as she drinks all the time during her pregnancy. She runs off home and confronts Jean about it. Jean tells Hayley that she isn't always drunk... well most of the time.
The next day, Hayley decides to go out and buy some vodka. She sees Keanu looking miserable and tells him that the will be miserable together. They sit in the park and Hayley tells him all about how her mum would go out for days and just leave her on her own without food and not even caring if she went to school or not. Keanu tries to reassure Hayley shat she is nothing like her mum. Hayley then gets out the vodka and dis about to drink it, just as Keanu grabs is and stops her and Hayley leans in for a kiss but Keanu pulls away, saying he has his own problems. He tells Hayley about his sister Bernie, who lost her baby (whom was named Belle). Hayley tells Keanu that his sister was lucky as she had family around her and a brother who loved her. Hayley continues saying that she has nothing and no one loves her but Keanu puts her straight and tells her to go home. After a while Bev goes to her house to make sure she got there safe but no one had seen her. Jean then says she knows where Hayley is and her and Kat go to Bev's old flat looking for Hayley as that is where she was brought up. They spot her sitting on the edge of the balcony with earphone's in. Jean tells Kat she remembers which flore it was so they go up. Kat assumes Hayley is just relaxing sitting on the edge but soon realizes that Hayley is about to commit suicide. Hayley continues to sit on the edge listening to music and drinking her vodka. She tells her to stop being selfish and to get down but she doesn't listen and tells Kat she will really do it, just as she stands up with her arms out. Kat screams for Hayley to get back down, and she does - telling Kat that if she knew the truth she would want her to do it. Jean intervenes and Hayley drops her vodka to ground, watching it smash into a million pieces. After a long time of trying, Jean eventually convinces Hayley to get down. The next day a social worker arrives to speak to Hayley and tells her that she was brought up in care and just wants to help people. Hayley then tells her that she canceled her abortion appointment and actually wanted to keep the baby. After the social worker leaves, Jean walks in and Hayley automatically blames her for calling social services. Jean denies it, just as Stacey and Kat walks in and Kat admits it was her not Jean. Hayley apologises to Jean and goes upstairs to pack her things to leave. Kat tells Stacey she was so close to jumping and needs help.
On the 29th October 2018, Hayley tries to make herself go into labour as she wants the baby to hurry up and be born. Originally, Hayley wants the baby to be put into care as she believes she is like her mother who left Hayley all on her own for long periods of time at a young age. Hayley tries to eat some spicy food which Mariam gives her but the baby kicks and she does not go into labour. She then decides to take a long walk through the square but that doesn't help other. She is then spotted by Karen Taylor, Keanu's mother who tells Hayley she should have sex and that makes you go into labour. Hayley then then calls round Keanu asking him to have sex with her. At first Keanu is unsure about it and thinks it would not be right. Eventually, Keanu agrees but tells Hayley that he is sweaty as he has just been for a run. He goes for a shower just as Kat, Jean and Mo walk in the house. Hayley manages to get rid of them and tells Keanu that it was a bad idea. Soon, Hayley's waters break and she decides to take herself to the hospital without telling anyone. Hayley begins to have contractions. Ian Beale asks for a lift to his meeting but Hayley screams at him and drops him off at the tube station just before her telling him that if he doesn't get out, he will be delivering her baby. Hayley begins bleeding but people think its a Halloween prank. not believing her. Hayley then decides to walk into an old house where there are some teenagers who run away from her, also thinking its a prank. After being in labour for hours, Hayley eventually gives birth to a baby girl early hours in the morning on the 30th October. However the baby doesn't cry and Hayley sits cradling her as she lies there covered in blood, begging her child to breath. Soon, Kat realizes there is a pool of water in the house and realizes that Hayley's waters must have broke. Keanu then comes rushing to find the Slater's and tell them that Hayley left him a message on her phone staying she was in labour. Kat goes looking for her but soon finds that she took the taxi. After looking for a while, Kat hears the baby cry. They follow the cry and find Hayley and the baby, with Hayley lying there on conscious as her placenta has not yet came out. They phone the ambulance who rush them both to hospital as Keanu holds the baby in his arms.
When Hayley and the baby arrive at the hospital, Jean tells the doctor that Hayley has been drunk multiple times during her pregnancy and asks if that could effect the baby but the doctor tells her its too early to tell. Once Hayley has woken up, she is horrified to find Kat holding the baby, with Mo saying she is a proper Slater because she's so beautiful and immediately tells them both to leave and to put the baby down as Hayley feels guilty Kat is holding her husband's daughter, unknown to Alfie that Hayley had kept the baby instead of having an abortion, which he gave her the money for. Kat then starts to look through some old pictures of Alfie and the boys, telling Mo that they need their mum. The social worker then visits Hayley at the hospital asking her how both herself and the baby are doing, but Hayley screams at her to get out as they are doing fine. Hayley tells the doctors she doesn't want anymore visitors just as Keanu walks in, which cheers Hayley up. He gives her a 'baby girl' balloon for the baby and kisses her head as he tells her well done. As he is about to go home, Hayley stops Keanu and asks him to stay with her. He does this but during the night, Hayley sneaks out the hospital with the baby, thinking Kat will learn Alfie is the father and take revenge on Hayley by making sure the baby gets took of her. Hayley then leaves her baby on the door step of Mariam and Arshad, with a note asking them to look after the baby. Hayley then goes to see her mother who tells Hayley she did the right thing. Kat, Mo, Stacey and Jean worry frantic about Hayley and the baby, thinking she has done a runner. Mariam tells Arshad not to call social services as they will take the baby away and Hayley trusted them to look after her.
The next day, while giving the baby her bottle, Mariam and Arshad's nephew Masood burps the baby and notices she is vomiting blood. Mariam tells them that sometimes babies swallow blood at birth and its nothing to worry about but the immediately call Hayley and rush her to hospital just incase. The name Baby Slater is called and Hayley and her mother Bev arrives there just in time. Mariam can tell she's drinking but tries to be calm for the baby's sake. Meanwhile while sitting in the café, Kat notices Masood carrying nappy's and asks him who they are for. He quickly runs away but Kat catches up and forces him to tell her the truth. Kat immediately rushes to the hospital and cries and begs Hayley to come home with them. Kat tells Hayley that the best for her baby is not with Bev but Hayley apologizes and goes home with Bev and the baby, leaving Kat crying in the middle of the hospital. While at Bev's house, Hayley tries to hold and feed her baby but she does it all wrong. Bev tries to teach her but while feeding the baby, Hayley leaves the lid off the formula and it goes all dry. They have no money to but anymore, therefore Bev suggests breastfeeding to Hayley as the baby cant go hungry. Hayley tries this but it doesn't work. While Hayley holds the baby, Bev shows her a picture of her when she was a baby, the name says Rose and Bev explains that Hayley was named Rose for the first five days of her life, but she decided to change it as it was two much of a nice name for a screaming baby. Hayley looks at her baby and Bev tells her that its not a bad name for her baby. Once the baby had gone to sleep, Hayley tells Bev she cant do it. Bev tells her that she's right and says that they will find a nice family for the baby and might even make some cash out of it.
Hayley texts Jean telling her to come to the flat when Bev is out, which both Kath and Bev overhear. Whilst Bev goes to stop Jean and the tube, Kat goes back to Bev's flat and tries to convince Hayley to come home. After some questions, Kat figures out that Bev is trying to sell Hayley's baby - and Hayley agrees with it. Hayley argues that she's not abandoning her, but trying to give her baby a better life. Bev returns home and is surprised to see Kat. Kat confronts her over selling the baby. They argue; Bev arguing she's doing this for the sake of Hayley, Kat arguing that she's just trying to make a few quid. Hayley leaves and takes the baby with her, tired of the arguing. Bev tries to convince Kat that this is best - offering to give her £20,000 of the £100,000 that the couple is preparing to pay. When asking how much Hayley will get out of it, Bev says she cannot be trusted with money but will give her money for a flat and plans to support her. Kat asks for £40,000, but Bev says that the maximum she can have is £30,000. Hayley returns to the flat where Bev explains that Kat agrees with the plan. Kat, however, tells Hayley the truth - that Bev doesn't know this couple, is selling her baby online to stranger, and all she cares about is 'the money she's going to split with me if I tell you it's a good idea.' Bev tries to lie to Hayley and convince her that Kat is lying, but Kat then tells Hayley that she was offered £30,000, so Bev is probably getting double that. Hayley decides to leave, confronting Bev and tells her what she thinks of her. Bev tells her that it would be better to sell the baby to some criminals than have her bring her up. Kat picks up Hayley's bags and leads the way out, Hayley follows bringing the baby with her. Bev tells Hayley that she's going straight to hell, Hayley turns to look at her and tells her, "I've already been there.", before slaming the door in her face.
The next morning at breakfast, Jean apologises to Hayley for not coming to her when she needed help. She then tells Whitney Dean off for trying to take Hayley's cup of tea. Stacey then asks Hayley if she's going to register the birth, and Mo Harris asks if she's going to put down the father's name. She goes on to say, "Keanu, ain't it? At least you'll get your child support." Stacey and Jean then tell Mo off for bringing up the subject. Hayley asks Kat why the baby stinks so much, even though she hasn't eaten - making Kat laugh. She also explains her fears about breaking her if she touches her. Hayley thanks Kat for her help, Kat tells her she would've felt differently if Bev had offered half. Hayley asks Kat if she wants to hold the baby, which she declines. Later, Jean moans at Stacey and Martin that Hayley doesn't have to tell them the father if she doesn't want to (not that Martin and Stacey are fussed, they are busier arguing about Max Branning staying longer than one night and Ruby Allen moving in). The next day, Hayley sarcastically apologies to Mo for the baby crying. Stacey asks why she smells of cabbage, and Hayley explains that Mo told her cabbage leaves would stop her boobs from breastfeeding. Stacey then explains to her that that dries up all the milk, so you have to put the leaves on after - not before, which is probably why it hurts more. Hayley then takes the leaves out of her bra and throws them at Mo, much to the horror of Martin. Kat comes down on the phone and wakes the baby. Hayley has a go at her, mentioning that it'll work her up for when the social worker visits. Kat then comforts the baby. Hayley comes back and asks Kat if she's the "baby whisperer." When she asks about the social worker, Hayley answers Kat by telling her she's going to cancel as she has an appointment looking at nursery places. Kat tells her she can't, as the baby isn't a month old yet. Hayley asks for her baby back, and Kat tells her there's nothing to be afraid of regarding the social worker, and she can't keep running away. Kat offers to be there for her in the interview, and when Hayley leaves, she cancels meeting up with Alfie Moon. When the social worker, Hilary Taylor, turns up Kat shows her in and compliments her coat. Hilary tells Hayley it's good to see her again and compliments her coat when Kat tells her to. Kat then ignores a call from Alfie and apologies for the interruption. Hilary asks Hayley how she's coping, to which she answers, "vodka." She then explains that that is what she wants to hear so she can take her baby away. Kat then answers against this and tells her that since the baby has been born, she hasn't touched a drop of alcohol. Alfie tries ringing Kat again but she ignores him. Hayley is then asked what stops her drinking? To which she answers by saying her family does, because they help and teach her things - making it easier for her. She goes on to say she realises she has messed up but she deserves a second chance. She asks Hilary if she wants to hold the baby, to which she says she would love to. Kat's phone rings again, and Hayley tells Kat (after a bit of persuasion) that it's fine now and that she's got it under control. Kat then leaves.
Sonia Jackson asks Tiffany Butcher if the baby has been named yet, but she says no. Sonia then mentions that the baby, "must've made an impact then. Kat walks in and watches Jean sing to the baby in French. Kat asks if Hayley is awake yet, to which Jean says she wanted to let Hayley sleep. Jean then leaves to go to the toilet and asks Kat to watch her, to which Kat then tells the baby, "Well, I ain't singing." She then tells her that Hayley doesn't know how lucky she is. Later, Hayley comes downstairs and asks how long she was asleep for. She then comments that Ruby is lucky for having a whole flat to herself. Soon Alfie arrives back in Walford with Tommy, Bert and Ernie. He spots Stacey holding the baby and asks if he can hold her. He rocks the baby in his arms saying shes the most beautiful baby girl he has ever seen and her eyelashes are stunning. Alfie presumes the baby is Stacey's but Hayley tells him that the baby is hers and Alfie is left in shock after realising that the child he is holding is in fact his daughter.
On December 25th 2018, the truth gets our about Cherry being Alfie's daughter after Kat opens Alfie's Christmas present from Hayley and its a lock of Cherry's hair. Kat goes ballistic and decides to get drunk. Alfie is pushed down the stairs by Hayley after he tries to attack Kat. He is believed to be dead, however he is later revealed to be alive and has kidnapped Cherry. He asks Phil Mitchell to provide him with fake passports; Phil does this however tells Alfie to think twice about his actions. On New Year's Eve, Alfie makes a video call to Hayley showing that Cherry was safe and well and said he would return soon, before hanging up.