I read this to the boys. It was decent. If you have particularly sensitive children, the depictions of slavery might be a bit much for them (I did a little bit of editing on the fly as I read.)
Excellent historical fiction and a clever set-up where the protagonist doesn't realize the many ways that she is being used (but the reader does). But it did drag in some parts.
I like the idea of light non-fiction, but this one went too far. And it went in too many directions, especially given the autobiographical aspects. This just didn't work.