When John begins an affair with student, Rosie Webster (Helen Flanagan), Fiz thinks he is having an affair with Rosie's mother, Sally (Sally Dynevor), whom he has been teaching. However, the truth is revealed on Christmas Day 2007, when John inadvertently mixes up Fiz and Rosie's presents. When Fiz returns, she is shocked to learn what has happened but bravely decides to move on with her life and applies to be Chesney's guardian. Chesney and his beloved Great Dane, Schmeichel are allowed to return home after Fiz moves into No. 5. Initially, she clashes with Kirk's girlfriend, Julie Carp (Katy Cavanagh). While she is happy that Kirk has moved on, she is unhappy with Julie's attempts to be Chesney's carer, feeling that it is her job. After a few months, they become friends.