I think, based on the info provided by nursebeeme and AZlawyer, as well as Dede's attorney, that Dede is cooperating, simply seeking immunity, and that there wasn't time to get the immunity in place.
Since Kaine/Desiree said she's been working with LE this past week, I think, however, it may be that it was realized that she didn't need immunity, and that she's simply been talking even more with LE this past week, and won't be going back to a GJ, because there's no longer a perceived need to. I think it may be that Dede became frightened after Kaine/Desiree issued their statement, but that after retaining an attorney, and him speaking with LE & the DA, and then with her, that all parties realized there was no need for immunity, and no need for Dede to be frightened.
I don't think Dede has any information that will be helpful to finding out what happened to Kyron. I don't think she's involved, or that she knows of any involvement by Terri, or anyone else.
Yes; Also, I know I heard on Headline News that she was cooperating, but maybe I heard it wrong.
It seems to me that if DS were involved in a preconceived plan that she wouldnt have "left her job abruptly on the day Kyron went missing" bc that seems screamin red flag fishy. IDK. And if a friend, hypothetically TH, called and said that there'd been an accident; "come help me" it seems she would have said that there'd been an accident and she had to leave.
I know she is not a sympathetic character; Perhaps that is, to some degree, bc of the way she looks, comes across, etc; And that smug smirk plastered on her face doesnt help, but it's not a crime to be obnoxious. (ok if it were, I'd be in the hoosegow my-own-self.)
moo