Wel considering the fact that i haven read much... I would trust her just because of the way she tells it. yes i understand that emothins of the event may get in the way but she was the main focus of the book and it was her story to tell. and just to add to it some parts of the book she was alone and when your alone there is no one to account for what happened. but i trust that she is portraying the events accurately.
hope this helps