Darkness Before Dawn by Sharon M. Draper

This is the 3rd book in the trilogy, it follows a female high school senior,
coping with her ex's suicide and developes a relationship with a high
school coach who is the principal's son.

This book contains; anorexia, anxiety, bullying, controversial cultural and social commentary, death/grief, depression, drugs, dubious consent, manipulation, profanity (very minor), racism, rape (attempted), suicide, sexual assault and violence.