He is introduced to us in Chapter six. While Josie's mother was still pregnant he left Sydney for Adelaide. He return comes with the assertion that he does not "want a complication in his life" and again he seems to be deserting Josie. She confronts him about this, and his attitude does not win her affection. It seems that Michael cannot provide to Josie what she needs - a stable father figure that might help her to make sense of her own identity and unique set of circumstances.
However, later in Chapter 8, Michael comes to her aid and she feels proud to have him walk alongside her. Josie has long craved this feeling and her father finally provides it to her. Their relationship continues to grow stronger throughout the novel, and he tells her that "If I had to choose a daughter, I would have chosen you". This remark, combined with his attitude seems to reaffirm his postion is her life. He proposes that she comes live with him in Balmain and that she becomes his adopted daughter. She is prepared to consider a name change, yet her journey of discovery dictates that she cannot leave her mother and live with Michael. He provides only part of the answer in her journey, and she realises that she cannot desert her mother.
Josie's grandfather, Francesco had a unique situation with his wife - Josie's "Nonna". Being from Italy (the old country), it was customary for arranged marriages to be set up by ones parents. This is the situation that "nonna" found herself in. However, she committed adultery, and had a child that was not fathered by Francesco. This child was Josie's mother, and Francesco always resented her. While Josie never met him, she was aware of the coolness between her mother and him, and of the unusual situation between him and her grandmother.
This realisation of Josie's leads her to question the moralistic teachings of her grandmother, considering her sinful past. Josie views this as hypocrisy on the part of her grandmother, however we the readers are left to wonder if nonna's hypocrisy is a way of making up for her past sins, and a way of easing the pain of her failed marriage and the problems that have occurred in her family as a result.