A Crooked Tree by Una Mannion

A haunting, suspenseful literary debut that combines a classic coming of age story with a portrait of a fractured American family dealing with the fallout of one summer evening gone terribly wrong.
"The night we left Ellen on the road, we drove up the mountain in silence."
It is the early 1980s and fifteen-year-old Libby is obsessed with The Field Guide to the Trees of North America, a gift her Irish immigrant father gave her before he died. She finds solace in "The Kingdom," a stand of red oak and thick mountain laurel near her home in suburban Pennsylvania, where she can escape from her large and unruly family and share menthol cigarettes and lukewarm beers with her best friend.
One night, while driving home, Libby's mother, exhausted and overwhelmed with the fighting in the backseat, pulls over and orders Libby's little sister Ellen to walk home. What none of this family knows as they drive off leaving a twelve-year-old girl on the side of...