Yes. This book contains portrayals of mental illness (specifically depression, paranoia, psychosis/ disordered thinking), suicidal ideation, and child sexual abuse/ coersion (NOT pictured, only implied). This book does not vilify the mentally ill, and the characters are not intended to speak for or represent large groups of individuals of any identity.
The context for these story elements is to explore the way mental illness can develop through biological or environmental modes, and to portray characters who grapple with challenging aspects of their personal histories or medical conditions and work to find solutions that allow them to live their best lives. The overall tone of the book is one of retaining hope through difficult times. Much of this book is derived in some way from personal experiences, and you can rest assured that I never use these subjects for cheap shock value.