I agree with a lot of your post, but logically, I don't think she killed Haleigh. I could see Ron covering for her, but not Teresa. Also, I think Misty really liked Haleigh & enjoyed being around her. She seemed proud of her. Also, I think she got a kick out of helping Ron raise her-kind of a side swipe @ Ron's ex. She even wanted Amber's baby, remember? Having the kids seemed to make her feel important. & I have to admit, after all of this happened, her sadness for Haleigh was the only one I really believed. It could've been out of sobering up & regretting her actions, like an 'oh, God, I didn't mean it, please take it back,' kind of thing, but if it was? I fell for it. I didn't fall for Ron's drama, @ all.