I think between Misty, Jo, and Tommy....Misty is the one who knew where the body was. That makes me think that Tommy and Jo did not participate in that part. So Misty would've had to be with someone else other than them when Haleigh was disposed of there. I posted my newest theory on the Jo thread...so you would have to read that to understand where I am going with this.
I think the spot became a memorial spot for a few family members on the Cummings side. I also believe that it is one of them who was visiting that area in the grey/silver van. JMO though
I think Misty is the one talking....and she is telling it all.
Remember TN: "You think she will talk?"
YES TN........Misty is talking now.