This final section highlights the overarching changes in these characters’ lives and their evolving family dynamic. Fiona’s acknowledgment of Marcus’s maturity and her suspicion of teenage rebellion reflect her adjustment to Marcus’s growth and the typical anxieties of parenthood. Will’s attempt to lighten the mood and his reflection on their collective transformations reveal his deeper understanding of and connection to his new chosen family. He notes that his own emotional growth has come with sacrifices but has ultimately led to more meaningful relationships. Fiona’s improved mental health and Marcus’s transition into a more typical teenage role also signify positive developments. The piano sing-along proposal to a Joni Mitchell song—formerly one of Marcus’s favorite musicians—and Marcus’s blatant refusal serve as a metaphor for the family’s ongoing adaptation to change. Will’s belief that Marcus will be fine, despite his discomfort, encapsulates the novel’s message of growth, resilience, and the enduring bonds of family and friendship.