This book betrays my brother

What does a teenage girl do when she sees her beloved older brother commit a horrific crime? Should she report to her parents, or should she keep quiet? Should she confront him? All her life, Naledi has been in awe of Basi, her charming and outgoing older brother. They've shared their childhood, with its jokes and secrets, the alliances and stories about the community. Having reached thirteen, she is preparing to go to the school dance. Then she sees Basi commit an act that violates everything she believes about him. How will she live her life now?