A dramatic and enigmatic character from a wealthy family, whose carefree lifestyle contrasts with Vix's, bringing both friendship and complexity to Vix's life.

Caitlin's laid-back and former hippie father, who maintains a mostly passive role in the household and has a relaxed approach to parenting.

Lamb's wife, who becomes a nurturing figure for Vix, supporting her education and treating her as part of the family.

A working-class islander from Martha's Vineyard, who becomes Vix's primary romantic interest over summers spent on the island.

Vix’s younger brother, with whom she shares a close bond and who follows her footsteps in seeking independence.

Vix’s mother, who works for the Countess and is portrayed as distant and pragmatic, with a focus on maintaining family stability.

Vix’s supportive father, who struggles with employment stability and maintains a passive demeanor much like Lamb.

Vix’s sister, who is caught in a challenging and contrasting life situation, serving as both an antagonist and foil to Vix.

Vix’s brother, who has a brief presence in the narrative, with concerns surrounding his safety hinted at.

Abby’s son from a previous marriage, who spends summers on the Vineyard and has a developing character through experiences with depression.

A friend of Daniel's from Chicago who becomes Vix’s romantic interest later in the story.

Caitlin’s brother, who avoids the household’s tumultuous dynamics and excels in computers while grappling with adolescent challenges.

A frail and quirky employer of Tawny, whose eccentric stories and connections to characters in the book add depth to her role.

Caitlin’s mother, who shares a bohemian lifestyle and beliefs with her daughter, eschewing traditional parental responsibilities in favor of personal adventures.