I wonder if Misty's parents (considering they weren't always there for her in the past; from the way I understand it to be anyway) think/know that she did something or think/know she helped or think/know that she does in fact know what happened to Haleigh...decided to step up now and try being her parents by helping sway any thoughts of what might have happened away from Misty. OR...
Since we have heard that the people in Satsuma and that area are scared of repercussions from talking what they do know that Misty's parents may have been threatened and so then they decided to start talking and this cousin was the route they chose to take since Misty was already making mention of it!!! JMO...
When was the last time Misty was in the media?
ETA: I just re-read this and hope I'm coming across clearly enough in my first paragraph...LOL