Half Lies by Sally Green 

Meet Michele and Gabriel: young Black Witches in a brave new world. Their mother was brutally murdered. Their father drowns his pain at the bottom of a bottle. They begin a new life in Florida, where Michele meets a White Witch boy, but the divide between Black and White Witches is as dangerous as ever. Soon Michele is caught between love and loyalty, truth and lies. Could falling in love be the deadliest mistake she’s ever made?