The Forest of Hands and Teeth

We read about how the main character was put into a cathedral after seeing her mother "dead" and is going into the forest of hands and teeth.she was washed with holy water and other holy items. However she didn't believe in god.After some weeks she was able to go home.The brother of the home doesn't want him to be at there home because she was a reminder of her parent's death.So then she is going into sisterhood.Where she has to learn and everything.