Fan helps to break Scrooge's isolation
1. Fan was Scrooge's sister, who was affectionate, loving and full of laughter. The ghost and Scrooge agree that "she had a large heart"
2. She had a strong bond with Scrooge - she calls him "Dear, dear brother", and he calls her "quite a woman"
3. Fan had asked her father more than once to allow Scrooge to come home. Her excitement shows how important it is for her to spend Christmas with Scrooge. Theme - Family: Fan is eventually able to change her father's mind, which is a parallel to the way that her son, Fred, insists on inviting Scrooge for Christmas every year until he changes his mind. Fan and Fred both want Scrooge to be a part of their family life
4. Fan is dead by the time the main events of the book take place - this makes the reader pity Scrooge for having lost the sister he once loved