I also believed Ron's tears, but that doesn't mean he was 100% in the dark. I believed Misty's tears too. Nobody can convince me that those tears weren't real, but I don't think she was 100% in the dark either. IMO, their tears weren't because an unexpected, unexplainable abduction had happened. Ron seemed so grief stricken. Where was his hope? and Misty seemed so traumatized. Why? What did she know and what had she seen? IMO, they both acted like they were grieving for Haleigh, but how could they have known there was reason to grieve? They both said, more than once, that they thought CS's side of the family was behind this. If so, that would have been reason to hope...not fall to the ground sobbing. So yes, for a large part, I believe their emotions were genuine. When Misty talked about Haleigh, she seemed to dwell on how little she was and she went on about how smart she was, how much fun they had together. Those are the kinds of things people say when talking about a dead child, not a missing one. In other words, they seemed more like fond memories instead of a description. If they thought Haleigh was alive, they would have been pleading with the abductor to feed her, be kind to her, get her to a doctor...but I remember Ron making the point that she wasn't property or a thing to be stolen. When going back and rewatching them, I'm more convinced than ever, that these 2 knew more than they were telling. JMO.