Martina is an old friend of Kat Moon's from Spain, who reported Kat and her husband Alfie Moon to the police in Spain, leading to some animosity between Kat and Martina. Martina and her daughter Shenice Quinn arrive at The Queen Victoria, and Kat immediately throws water over Martina. However, she reveals that her bar was smashed up by the police and she was worried that she would lose Shenice if she did not tell the truth. Alfie bonds with Shenice, and Martina tells Kat that she has lost her bar and has nothing left, so Kat allows her them to stay. After a night out with Kat, Martina spends the day in bed. Kat later finds Shenice wearing her clothes and makeup. Kat shouts at Shenice to take the clothes off, and Shenice flinches thinking Kat is going to hit her. The next day, Shenice is caught trying to steal cigarettes from the local shop, which Kat chastises a drunken Martina for. Martina calls her daughter useless before going to bed, and Shenice tells Kat and Alfie that Martina says things she does not mean when she is drunk. The next day, Martina tells Kat that she will get some money so she and Shenice can move out and that she is back with her boyfriend. Kat and Alfie organise a birthday party for Shenice as Martina has forgotten and Shenice takes a disliking to Tiffany Butcher as they are wearing the same outfit. Shenice has to leave halfway through the party as Martina finds a place to live, and they move out, leaving Alfie and Kat distraught. They return to Spain, but Shenice later returns with Kat and Alfie after a holiday. When Shenice goes to visit Martina in Spain, Martina gets herself more settled and Shenice stays with her.