The Broken Bridge by Philip Pullman

() A sixteen-year-old female-artist, Ginny, runs into more than one obstacle while trying to explore her family's roots. She's half Caucasian and half Haitian, growing up in a rich, non-diversified suburban neighborhood. Her father won't speak more than a sentence about her supposedly dead mother. Not until an unknown half-brother comes to live with them does Ginny learn any truths about her family. She finds her dad has been lying, and thus sets off to discover what else she's been made ignorant of. In the meantime, she learns more about herself, such as her uppity-but-naive nature. She also learns that sometimes there are understandable, sympathetic reasons behind crimes and lies.
This story can be a little slow in the beginning, but it eventually picks up and is worth the wait. It's an alright read and has some good prejudice and discriminatory issues to tag in line with the main plot.