From reading the articles and listening to the podcasts, I don't picture RA as the patient, calculating type. If he's made peace with DA, I feel it's because either Mama made him do it, or he's been persuaded that Sis is innocent (IMO).
I'm under impression that he's "my way or no way" type, and he loses it easily if something is going against his will.
It's hard for me to se the Mama being the one who's pulling all/his strings cause I saw few interviews with her from the time when RA was going strong against his sister and FA seemed to be pretty heartbroken over it and kinda like helpless in this.
That's why it's so hard for me to buy the theory that A's family went all for covering for DA (or DA & TT).
Let's say that they did... that would make them 100% aware what happened, where, who done what, who could end up as the whitness testifying against their scheme.
That kind of knowledge mixed with good amount of negligence from the LE and ability to shut down and pretty much control other families, not allowing cops to interfere much with their scenarios, not allowing any unsuspicious PI's - this is like the perfect storm in which not even the brightest bulbs should be able to convince everyone to not look into DA's direction.
Yet she's the main focus of everyone. She was made into main suspect, the one who surely knows something in the entangled web of insanity that doesn't seem to have solving this case as the main goal. Seems like creating even more mess and getting attention is the goal. But why?
Easiest explanation seems to be that it's for the benefit of the perp. TT and his family aren't involved that much in the mess or with those who are creating it. DA & FA doesn't seem to benefit that much. I mean... yeah, staying out of prison is a good benefit, considering possibility of DA's involvement, but if so, this all is pretty damaging way of getting it. And it's not like RA is pulling the strings cause he was just 11 then. So it's more like someone who was able to get a LOT of FA's approval and trust right away, yet managed to kept himself out of the spotlight somehow.
If it's not a gossip or mistake (it's been a while since I've read it somewhere and I can't even tell where it was)
that A's neighbours had a teenage daughter who was supposed to go shopping with the girls, yet refused last moment (and that would explain why Rachel would go and ask FA to go shopping - if it wasn't her plan at all, and she showed up to pick the other girl, but that girl refused, yet mom showed up on the porch... that would be a reasonable moment to ask her to go, while hoping/knowing that she almost certainly won't go)
to help her mother with the party, same mother who's the reason why A's whereabouts on that day are in doubt, also wife of a guy who provided A's with all the revelations about Melvin, joined the search with Renee's dad.
At this point I'm just waiting for some mention that oh, coincidentally he was also good friend of JS and/or DJ.