When Billy Mitchell and Julie Perkins decide to find the son that Julie put up for adoption as a baby, Dan Pearce, they discover he has died. However, they find that they have a granddaughter, Lola, who is in care. They visit Lola at the care home and witness a fight between Lola and another girl, believing Lola is the injured girl, but Lola turns out to be the perpetrator. She tells Billy and Julie that Dan hated them so Julie decides to leave. Billy hugs Lola before they go and Lola uses this as an excuse to steal his wallet.
The next day, she comes to Walford and returns Billy's wallet. She flirts with several locals, including Jay Brown and Fatboy. Fatboy allows her to clean cars for him but she takes one and crashes into it into Ian Beale's chip shop. Billy sees this and tells her to run and Fatboy takes the blame. Lola visits Billy again and meets other members of his family. Julie tells Heather Trottthat she does not want Lola to live with them and Heather accidentally tells Lola. Julie feels that Lola is not their problem and Lola tells Julie that if Billy is forced to choose between them, she will win. Julie calls the police and has Lola returned to her care home, while Billy calls her "100% Mitchell". A week later, Julie finds Lola in the R&R nightclub and takes her home, after Julie apologies for reporting Lola to the police, and tries to get to know Lola properly.
Lola overhears Anthony Moon and his brother Tyler Mooninsulting Billy, and in revenge, burns their father Eddie Moon's stock. She gets a job at the café and admits to Liam Butcher that she started the fire. Lola starts stealing from the till at the café and short-changing the customers so Phil Mitchellsacks her. She asks Phil for her job back and offers her mobile phone in payment for the money she took but he takes the phone and refuses to give Lola her job back. She takes revenge by smashing up his garage and destroying a car, unaware that Jay is under the car, and is badly injured. She gets Julie and when the ambulance arrives, Julie takes the blame. She is released without charge, while Lola returns to the care home but is persuaded to come back and Julie leaves Walford.
Weeks later, Ian oversleeps and Lola tells him that she has been waiting outside the chip shop. Mandy Salter tells Ian to fire her, which he does but Lola soon persuades Ian to give her job back, by promising not to tell anyone about Mandy staying. She takes a liking to Jay's friend, Duncan Willis but later vandalises Grace Olubunmi's flowers. She decides to take up self-defence classes after Abi Branning is mugged. Lola steals towels from the Booty beauty salon and tries to sell them but is caught by Roxy Mitchell, who threatens to call the police. However, Lola convinces Roxy that she has shown ingenuity, and gains a job at the salon.
Lola asks her third cousin-once-removed, Ben Mitchell how he knows he is gay if he is still a virgin. Subsequently, they kiss and Lola sleeps with Ben before confirming his sexuality; he is gay. Shortly after, Lola finds she is pregnant and tells Billy, who is angry. Lola refuses to name the father but tells Billy that she plans to keep the baby and wants him to bring it up with her. She later tells Ben that he is not the father. Billy takes Lola to see Pat Evans about help, but Pat misunderstands and advises Lola to have an abortion, angering her. In December, Phil confronts Lola about a mystery file, thinking that she's been stalking him. Phil questions Lola, to the point where she steps backwards and falls down the steps to her basement flat. She is rushed to hospital and soon learns that she and the baby are fine. Lola receives a call to say Social Services want to visit, as there is a new social worker. Lola goes missing when the social worker, Harpreet arrives, so Billy asks Abi to pretend to be Lola. Billy assumes Harpreet is there about the pregnancy, so tells Harpreet, who is impressed with Abi's speech about motherhood. However, Lola arrives as he is about to leave and tells him that she is Lola, so Harpreet says the trust has been lost and she may not be able to keep the child. After falling down the stairs, she realizes how much the baby means to her and later finds out the baby is a girl.
Lola begins working for Janine Butcher as a cleaner and continues working at the chip shop, until Lucy Beale, sacks her. Lola takes revenge on Lucy by stealing chip fat from the shop and pouring it over cars at the car lot, making Lucy a suspect. When Lucy learns Lola is responsible, she calls the police and Lola is arrested. The next day, on her 16th birthday, she receives community service and a curfew, and has to wear an electronic ankle tag. Lola and Jay break into The Queen Victoria public house and get locked in after hiding in the back room. There, Lola opens up to Jay saying she will be a bad mother. Lola gets home just in time for her curfew, then runs back out and shares an illicit kiss with Jay, who is actually still dating Abi. She angers Cora Cross, after vandalising her stock at the charity shop and later prepares for Billy carrying the Olympic Torch but realises she is in labour in McClunkeys, where Cora delivers Lola's baby daughter whom she names Lexi Billie Pearce, after her friend, Alexa Smith. Billy witnesses the birth after successfully carrying the torch. When it is revealed, that Jay helped to cover up Heather's murder, Lola is at first wary of him, although she eventually forgives him. However, Billy is unhappy about them spending time together especially when Jay is forced to hide when a social worker turns up. Lola appears heartbroken when Jay says they should stop seeing each other.
When Lola gets a new social worker, Trish Barnes, she becomes increasingly agitated after Trish criticises her care of Lexi. She later bumps into Alexa and pretends to live a party lifestyle. Alexa and her gang spend time with Lola but when Alexa picks on Abi, Lola defends her and rejects her old friend. Lola later reveals she has a baby, named Lexi after Alexa, shocking her. Lola celebrates her tag being removed but is threatened by Alexa and her gang, who attack Abi and threaten Lexi, resulting in Lola punching Alexa. The police are informed and Lola is arrested while Trish takes Lexi into care. Lola begs Trish not to and asks Phil for help, telling him that he is Lexi's grandfather. Lexi is taken regardless and Trish tells her that Lexi could be away for up to eight weeks. Lola gets angry so Trish tells her she could lose Lexi for good if she does not control her temper. Phil tells Lola that he will get her back where she belongs. Lola is happy until she discovers that Phil wants custody but she eventually agrees to Phil's plan. Phil comes up with a plan for Lola to marry Ben and conspires with Billy, who is against the idea. Lola refuses to marry Ben and Phil plans to tell Ben the truth about Lexi, against Lola's wishes. Phil does not tell Ben but agrees to help Lola so asks Sharon Rickman to pretend to be his partner to help get Lexi. She refuses initially but agrees until she finds out that Lola does not know about the plan, angering Lola until Phil explains his reasons to her. Alexa drops the assault charge but Lola is devastated to learn that she will not get Lexi back. Lola worries that Phil's plan will fail after he tells Social Services that he and Sharon are no longer engaged, but Phil does become Lexi's kinship foster carer. Lola is devastated to learn that she will still only have three access visits a week, and Phil starts being controlling, calling Lexi "his" baby and not allowing Lola to provide for her. Phil also tells Lola who she can be friends with, disapproving of her friendship with Dexter Hartman. Phil decides to take Lexi on holiday so Lola seeks legal advice but agrees that Lexi can go. Lola makes a request in court to increase her access visits with Lexi, and Trish states that Lola has made good progress but Phil's lawyer tells the court that Lola is often late, brings age-inappropriate toys and is unable to handle Lexi's tears. The judge rules that Lexi will stay with Phil as kinship foster carer. Billy goes to speak to Phil, while Lola listens and hears Phil say that he will never give Lexi back voluntarily so Lola snatches Lexi and leaves. Phil, Billy and Sharon spend the rest of the day looking for her, eventually finding her at a playground. Lola goes home and Phil asks her to meet him later at his house. Trish is there and asks them if their relationship has broken down but Phil tells her that he is responsible for recent events and agrees to work with Lola to make the transition for Lexi to return to living with Lola as easy as possible. When Trish leaves, Phil allows Lola to look after Lexi, and starts giving her increased access. Phil is impressed when Lola acts calmly when Lexi is taken ill with suspected meningitis, though she is fine.
Lola notices that Sharon is acting strangely and finds her passed out when she should be with Lexi. When Sharon regains consciousness, she admits that she is addicted to painkillers and tells Lola that if she tells Phil, Lexi will go back into care. Phil also later catches Sharon unconscious and when she comes round, he confronts her and throws her out. Just before the final hearing to decide if Lexi should be returned to Lola, Phil learns that Lola knew about Sharon's drug addiction and calls her a bad mother before leaving the court building. However, Billy convinces him to do the right thing, and Lola is successful in getting Lexi back.
Lola develops feelings for Peter Beale, but the feud between his family, the Beales, and her family, the Mitchells, make them anxious about being together. However, they eventually force Phil and Peter's father Ian Beale to accept their relationship. Peter moves in with Lola, Lexi and Billy and pressures her to start a career in childcare when she loses her job at the local salon. Despite agreeing to do the course, Lola starts her own business doing the locals manicures and pedicures and loves it. She becomes closer to Jay and admits how Peter makes her feel that she is not good enough for him. After an argument with Peter, Lola turns to Jay for support and he tries to kiss her. Horrified, she goes to run off but as she steps out into the road she is accidentally run over by Ronnie Mitchell]]. She is immediately rushed to hospital, where she is told she has concussion, but is discharged the following day.
Following the murder of Peter's twin sister Lucy (see Who Killed Lucy Beale?), Lola struggles to support him as he in turn is struggling to support Ian and the rest of his family. When Lucy's memory is tarnished in a Walford Gazette article, Lola approaches them and gives them an article of content of what she believes will paint Lucy in a much better light. However, her words are twisted and Peter believes that Lola did it just for the money. Peter ends his relationship with her, and moves home to Ian. After Lucy's funeral Peter moves back home with Lola and Lexi. Peter begins developing feelings for his ex-girlfriend, Lauren Branning, despite her relationship with Dean Wicks. Peter ends his relationship with Lola after admitting he kissed Lauren. Although Lola wants to make the relationship work, Peter still declines and begins a relationship with Lauren after she dumps Dean. In September 2014, Ben Mitchell returns to the square for Phil's wedding to Sharon. Billy and Jay hide Lola after Phil wants Ben to meet Lexi and tell Phil that she is visiting an ill friend. A few weeks later, Lola returns to see Phil, however comes face to face with Ben.
While Lola is in the pub with Jay, Ben and Abi walk in and Lola is confused as to why Abi is being so cold. Ben walks over to Lola insisting she is a good mother and he doesn't want to take Lexi away. When helping Johnny Carter at The Albert, Lola insists she has nothing to do with Abi and Jay's break up and begins making friends with her. Abi then tells her that she is in a relationship with Ben, causing Lola to be confused and worried, so Abi becomes defensive and think Lola is stealing Ben away. Jay invites Lola to The Queen Vic where Abi tells Lola that Jay only invited her to get back at her. After Jay reveals that Ben tried to kiss him, Lola walks out of The Queen Vic and Ben denies his accusations. Lola questions if Jay was using her to try to make Abi jealous, but Jay reveals to Lola that he still has feelings for her. When Jay tries to kiss Lola, she rejects him, telling him that she does not feel the same way about him. Lola is excited when her boss Dean asks her out to discuss her future at Blades hair salon and dresses nicely, but Dean's concerned mother, Shirley Carter , sends her away, worrying about Dean's reputation.
Lola is frustrated when newcomer Paul Coker accidentally knocks her over in the street, but they become colleagues. Dean sacks Lola for being absent but Phil gives Shirley a large amount of money to secure Lola's job. Following Ben's arrest on suspicion of murdering Lucy, Jay is worried he will be arrested as well after he reveals that Ben mugged Lucy on the night of her death. Lola comforts and reassures him and then they kiss, leading to sex. They then start a relationship. Jay tells Lola he wants to leave because Phil has given the police Lucy's incriminating purse and phone with fingerprints on it. She is upset but Jay suggests she goes with him, which she does, taking Lexi with them. Jay calls Billy and reveals that he, Lola and Lexi are moving to Newcastle with Dexter. She returns briefly with Jay to collect more belongings, but Billy tries to convince her to stay and let Jay go to Newcastle alone, but Lola refuses. Billy tells Lola he is going to collect his daughter Janet Mitchell so that they can all share their goodbyes, but Billy reports Jay to the police and he is arrested for robbery. Lola realises that Billy reported Jay moments after Jay's arrest, so Lola leaves for the train station with Lexi. Billy attempts to convince Lola to stay in Walford, but she says she could have a better life somewhere else and that she wants him to be proud of her. Billy and Lola share an emotional farewell and Lola leaves for Newcastle, taking Lexi with her. Although Jay plans to join her eventually, Lola later ends the relationship because she is now dating Dexter.
Lola returns along with Lexi and Ben. When the Mitchells have a celebratory drink in The Queen Vic, Jay and Lola have conversation in which Lola reveals she and Dexter are no longer together and agreed to a mutual break-up. It is revealed that Lola and Ben are only back to con Phil and Ben promises to give both Lola and Lexi some of the money. Lola reunites with Jay and they almost start dating again however, it is revealed that Lola is engaged to Ewan. Jay rejects Lola and she decides to move back to Newcastle with Ewan but Ben manipulates the situation and Ewan leaves Walford. Lola tries to get Billy back with Honey Mitchell and schemes various times to break up Honey and her boyfriend Adam Bateman, although she is unsuccessful. She starts working as an Events Manager with Jay's girlfriend Ruby Allen and the two eventually bump heads with each other. Lola becomes aware of Ben's schemes and warns him to end them, otherwise she will leave with Lexi. After Ben's plans to swindle Phil are exposed, Lola decides to remain in Walford and starts working as a hairdresser for Denise Fox. During The Queen Vic siege where Hunter Owen takes the residents hostage, Lola and Jay are locked in the bathroom together where they admit their feelings. They kiss and resume their relationship.