Sula by Toni Morrison
As young girls in a poor but close-knit community, Nel and Sula are inseparable. But their paths as adults couldn't be more different: while Nel settles in town to raise a family, Sula escapes for the progressive ideals of the big city. When Sula reappears ten years later, she comes face to face with a community whose values are at odds with her fierce individualism and rebellious ways. Reunited, Nel and Sula must confront the consequences of their actions and the dreadful secret they shared in childhood.
Two girls who grow up to become women. Two friends who become something worse than enemies. Terrifying, comic and tragic, Sula overflows with love and life, friendship and betrayal.