She's a fourteen year old girl. She's not Rambo. If she was raised in Utah, I imagine she's even more innocent about the ways of the world because we all know what hellraisers those Mormons are.
I don't think it would be that difficult for her captors to brainwash her into submission. The abuse she suffered would probably make any parent snap. Prayers to the poor girl that was abducted and hopes that she can someday resume a normal life and also to the parents during the trial. This stuff is terrible and the primary reason why I still believe in the death penalty.