Lia's former best friend, Cassie, battled bulimia and was a prominent member of the school soccer team and drama club, influencing Lia with her daring and imaginative personality.

Lia's father, a history professor renowned for his expertise on the American Revolution, who struggles to connect with Lia and understand her needs.

Lia's mother, a cardiologist with a demanding job, who has a strained relationship with Lia due to her high expectations and controlling approach to Lia's recovery.

Lia's stepmother, who tries to support Lia's recovery while balancing her responsibilities to her biological daughter, Emma.

Jennifer's young daughter and Lia's stepsister, who shares peaceful and affectionate interactions with Lia amidst family tensions.

A young man Lia meets at the motel where Cassie died, who offers Lia a perspective on Cassie's death that she does not find elsewhere in her life.

Lia's therapist, who has been working with her since her release from New Seasons, encouraging Lia to confront her mental health struggles.