chunk: By now, they have fully embraced their role as Mary's guardians. However, one morning, Sylvia (Nancy Travis) arrives, asking for her back intending to take her to London to live with her family. Handing her over, they quickly find themselves miserable and desperately missing her. Deciding to stop her and Sylvia from leaving, they rush to the airport to try and persuade the latter to stay, but they arrive just as her plane is backing up from the gate. Defeated, they return home, where they find both Mary and Sylvia, who did not go to London after all. Sylvia tearfully explains she doesn't want to give up her acting career but can't do so if she has to raise Mary alone, so Peter quickly invites her and Mary to move in with them with Jack and Michael's agreement, and she agrees.