The Kitchen House by Kathleen Grissom
After a 7 year old Irish girl, Lavinia, is orphaned while at sea in 1790, the ship's captain brings her home to be raised by his illegitimate daughter, Belle, a slave who runs the kitchen house on his plantation. As she grows up, Lavinia sees the slaves who are raising her as her family, but when she becomes more accepted in the main home of the ship's captain and his dysfunctional family, she quickly realizes that can never be so because she is white.
This is one of those books that stays with you for a long time. The character development is fantastic, and the storyline is so well put together, that even though it may not always be the happiest book, it is still among my favorites.
I give it an A.
If you liked this book, try The Forgotten Garden by Kate Morton.