The Girls of No Return, by Erin Saldin

This is the second troubled-girls-sent-to-outdoors/wilderness camp/school book that I've read this year, and it was so much better than Getting Somewhere.
Lida, Jules, Boone, and Gia are all at the Alice Marshall School for different reasons, and they are pretty well developed characters. I'm still not totally sold on Lida and Jules reasons for being there, but hey, fiction is all about suspending disbelief, and it worked for the book.