Board Thread:False Info and Speculative Discussion/@comment-108.81.117.0-20140621010425/@comment-4091815-20140621014147

You didn't miss anything.

She went to facility in Echo House because she's having trouble dealing with her guilt over the deaths of her mother and her sister. She as anger issues as she stated in the episode and also, as she told Stiles, she wants to go back to being a coyote to avoid dealing with her problems.

Mr. Tate considers her his daughter because he raised her and because he was married to her mother. You don't need biology to consider someone your daughter. As to if he KNOWS that he is not her bio-dad - we don't know one way or the other.