Steve Brown specifically stated that he did think Ronald had anything to do with what happened to Haleigh, but he did state that Misty was there and knows what happened in the trailer that night but I got the impression that he didn't think Misty did anything to Haleigh. My guess would be Teresa Neves but if she did hurt Haleigh I don't believe it was on purpose. And from the very beginning I have always thought it was strange that RC would get a tatoo of his mother's name across his heart. It didn't say "Mom" but rather "Teresa"