I finished reading The Freedom Maze by Delia Sherman yesterday. It's a time travel story, about a girl in Louisiana in 1960 who is taken 100 years back in time to her ancestors' plantation. It started out somewhat simple but got fairly complex (for a young adult book) as the book progressed. I recommend it very much, and did suffer somewhat from post book depression afterwards. I like Delia Sherman's books generally, she's not all that well-known I think but her books are well worth reading.