It would be tragic to call this just a coming-of-age novel or to call it a novel about the ways families fall apart and come back together again-- or at least try. I'd call it a book about imagination and choices, learning to live with being embarrassed, accepting that you are weird, and embracing defiance even when it hurts you and others around you because it's the only right choice.
That it also happens to be about sisterhood and family and secrets, trying to figure out who we are and accept that, and that it isn't pat, sentimental, or easily resolved with happy endings is all to the better. It has the feel of a magical realism novel, while being very much real.
B & N e-book, read on Nook HD+