Also, with regard to Terri's friend, obviously she doesn't think Terri is guilty, so I doubt there was some explosive revelation about whatever they talked about on the phone that day. Terri talking to this girl only confirms another plot point on her timeline. We may not know what it is, but it's something else she did that day.
When I think about the GJ indicting Terri and a possible trial, I wonder:
How are they going to disprove that Terri drove baby K around too soothe her earache? They'll get some doctors and friends who say "Yes, in fact, driving a baby around while she's teething would be soothing." It's something that can't really be disproved.
Her pings don't quite match up? Experts, and a lot of them, to cast doubt on the exact science of cell pings, or Terri doesn't remember exactly where she was driving because she was worried about calming her daughter so maybe she did ping off that tower and didn't realize it. Suavie Island has been searched extensively, and LE found nothing.
What do the cell phones prove? Desiree has said she was suspicious of Terri from the first phone call. Houze will trot out some friend who tells some sad story about Terri not even being able to talk on her phone because everyone was so suspicious of her. All she wanted to do was find her son, she had no one to talk to, blah blah blah.
The sexts? IMHO, even though it's among the more supposedly damning evidence, it's also the easiest to explain. Trot out some expert who says Terri has low self-esteem and only feels self-worth when engaged sexually with a man. Lord help us if there is some revelation or accusation that Kaine was emotionally or otherwise abusive. Kaine left Terri, took the baby, accused her of something horrendous, Terri was grieving for her son, and voila, ugly coping. Everyone was pushing her to break, and she did, but not in the way anyone thought or hoped she would.
I just don't understand how they're going to indict her without witnesses seeing Kyron leave with her and without a body and without evidence that a murder even occurred.
Also, IMHO, if DS was going to reveal something explosive, she'd have done it by now and the case would've progressed in a mighty way (his body found, the bloody shovel, whatever). There has been plenty of time for immunity to be worked out, and yet Kyron hasn't been found.