And to add one more point to my theory, after filling MC in and getting her back to the mobile home with the guilt trips that it was all her fault, and now RC was going to lose junior unless she helped make this look like an abduction, Teresa left and went to park around the corner to wait for cops to be called.
That is why she got there so fast with picture in hand that night. She wasn't far because she just dropped Misty off there and put jr back into bed (he was most likely taken to GGMS house for while until they could get the place cleaned and set up) then brought back when MC was brought back to appear as if she just 'woke up' and noticed Haleigh gone.
What I like most about your theory is that it explains some of the odd behaviors and the evasiveness we have witnessed from all the players. For the past 20 months I have tried to come up with scenarios that did not involve Ron, because I have no reason to believe he was not at work that night. However, Ron's behavior and some of his inappropriate statements made it impossible for me to seriously entertain any scenario that does not involve him
at least in the cover-up.
Ron's direct involvement, if any, felt like either a drug OD or discipline gone wrong, and either could still be the case with the scenario you outlined. And TN and GMS involvement would be to protect Ron, if nothing more.
I could never come to terms with Misty not blurting out the truth by now, given her current situation. If she knew nothing at all, and was not there that night, why not just say that to save herself?!! But she has not done so. Why not?
You effectively answer that question, IMO. Misty would bear much of the guilt--or at least thinks she would--if the truth came out.
Also, I have never been convinced that TN was at home asleep, awakened by a call from Ron that Haleigh was missing, but within about a minute's time she was up and dressed to the nines, and grabbed that 8 x 10 glossy as she stumbled out the door to arrive in record time at the MH. Your scenario provides a plausible answer to the TN quick-arrival question, IMO.
To me, it makes no sense at all that Misty would continue to cover for Ron, TN, GMS, or anyone at this point. Also, it makes no sense for any of them to cover for Misty anymore. Maybe in the beginning, when they all thought it would all just blow over, but with the case continuing and with her subsequent arrest, Misty would have cracked if she really believed she had no fault regarding Haleigh's demise. Misty having been thoroughly convinced she would be held responsible for Haleigh's demise could easily explain why she continues to deny not being at the MH that night.
Ron is involved; I am convinced of that. But, I have for the most part considered his involvement to be indirect--a cover-up of events rather than actual participation. I am still not 100% on that, but I am going to go along with him fearing the truth coming out for reasons other than direct involvement in Haleigh's demise. Ron, IMO, has many things he wants to keep hidden and I believe he is capable of feeling OK not being forthcoming regarding Haleigh's disappearance because
he believes that there is no reason to make his secrets known since it will not bring his daughter back.
All along, I have tried to figure out what happened to Haleigh. Your scenario helps me to see that the key to cracking this case may lie in cracking the cover-up, and who played what part in it. Once that is accomplished, the truth about Haleigh's demise may just fall into place, IMO.
I'm really tired and likely not making much sense but I hope you can follow what I have said. I like your scenario; it's simple, while pointing to each of the possible perps for at least having a hand in the cover-up.