Bethany Bettany, by Fred D'Aguiar (used)

A Caribbean country on the verge of collapse. A small town called Boundary. A rambling house inhabited by three generations of the Abrahams family. 

Bethany Bettany is five years old when her father dies and her mother leaves her to fend for herself in the Abrahams household. The place simmers with resentment: her uncles and aunts think her mother killed her father; her grandmother has not left her room since her grandfather disappeared. Behtany is the scapegoat for it all. Taunted, beaten, despised, she retreats into silence and learns to make herself invisible. As she quietly nurses her wounds, she eavesdrops on the adults around her. Soon she is piecing together answers to the questions that haunt her. How did her fater die? Why doesn't her mother answer her letters? And who is she?