Mimi gives birth to a newborn daughter, later named Cilla, at the end of Series 7 after complaining of stomach pains and nausea which scared her into believing she had started menopause. The baby was presumably fathered by estranged husband Paddy. According to the "Shameless" website, Mimi will return to living in the Maguire house, with baby daughter Cilla, in Series 8. It is implied that she is unsure who fathered Cilla because of her fling with underage Billy. It is later revealed that Cilla's father is in fact Billy, who returns to Chatsworth to be part of the child's life. At the end of Series 8 the couple marry, despite ongoing controversy and disapproval of much of the family. In Series 9, Mimi forces Billy to have an open relationship because she is worried she is to old for him. It is also implied she knew her son Micky was gay all along, after she encourages him to leave the estate with a baby he has saved, which he does.