You can bet your bibby, ron called tn and as as soon as he couldn't locate misty. That's a given. TN said she sent a "family member" over to check on the kids (and then added laundry to it later). That tells me right there misty was missing in action. TN in all of her vagueness was not willing/able to go there and had to get someone else to go (or did she really) Why wasn't TN available to check on the kids? Is it because she was not really living/staying on Rita Lane but in Lady Lake with her daughter, boyfriend and her daughters child.
There were problems going on in the cummings household for a few weeks and this was the final blow-up. TN was probably enroute early that day (after rc's call) and started driving to Satsuma. I bet that is why she had to send somebody else over there. Otherwise TN would be more than happy to confront misty on her own. Wanna bet Tn and As were mad as hell @ misty that day/night?
LE said to complete the timeline, they had to know the relationship that ron had w/each of the players. As of Aug 09, LE still had didn't have it. As of rc's sentencing, he gave up something (maybe), as his attorney said "ron helped them with the timeline".
We have to wonder why LE knows it is most important to figure out ron's connection with any of these players and that will help them with the timeline...hmm. How does rc's relationship with others figure into the timeline?