June's 16-year-old sister, who is a talented performer and has a tumultuous relationship with June. She appears confident and self-assured but hides her own vulnerabilities and pressures.

June's uncle, a talented and respected painter who has a profound influence on her life. Although deceased during the novel's events, his memory and the impact of his loss resonate throughout the story.

June and Greta's mother, who balances a demanding career with raising her daughters. She struggles with addressing difficult emotions and past regrets while trying to guide her children.

Finn's partner, who reaches out to June after Finn's death, despite the family's initial misconceptions about him. He shares a deep connection with June through their mutual love and grief for Finn, offering her comfort and friendship.