I think it's funny that he is still talking about that vague incident where his screams were recorded.
One incident he likely has no actual memory of, and in reality was likely entirely kosher, apparently has brought him to this event- and is solely to blame.
I am almost sure they did something like try and control chris from hurting himself as he chimped out in some way and wanted proof that he was sub normal to get him into a special program in a way Bob and Barb couldn't fight, what the cause of that was is lot to time but Barb and Bob took the option remaining to them of legging it to another district and making other kids and teachers put up with Chris.
I honestly thing though that it was inpart a fabrication told to Chris, he has a VERY poor memory recall of events even recent ones so him accurately relaying information decades after a event happened is to be taken with not just a grain of salt but the whole shaker, he has also been far to consistent with it's retelling and poor on fine detail so I am guessing it's something he's been told the details of from Bob an Barb and repeats them verbatim, he may have a vague memory of a indecent at school that made him feel worse than normal but nothing in detail.
14bc has a reverse mortgage on it, right? She will probably die sometime as Chris is in jail and the bank will swoop in and take everything.
I don't know how it works in the US and from the sound of it it's what's called in the UK as Remortgage where you take out a mortgage with the same risks as the first one just at a better rate and you only do it if your circumstances improve significantly or you really seriously need the money.
There is another option I don't know if it's a thing in the US but it's called "Equity Release" this has been a thing for about 15 years but became really popular in 2008 onwards, and is now starting to cause noise. It was designed for older people who had payed off there house and it had significantly increased in value who wanted or needed money for things, the adverts where always for things like around the world cruises, taking the grand kids shopping, prepaying funerals etc and it was only a part of your house 20% of the market value i think was the cap, there was a lot of fuckey going on with the valuations and the working of the agreements, but the main selling point was you can pass it down to your kids or grandkids with no issue they just need to pay back the equity etc.
The problem is in the contract the period of time they had was significantly shorter than it takes to get a morgage approved, and there was all sorts of pentaly clauses and other fuckery going on where they ended up loosing money or the house getting sold to a company that the vendor had a intrest in sold for a fraction of it's value and then the provider of the release being the main creditor to the estate proffiting many times over.
There is supposedly some legal cases challenging this mess comming up soon mostly because a few MP's got bit in the arse by it and because it hit them personally they wont let it go easy, but the whole situation was scummy and I can see Barb wanting the money and not caring about Chris and soothing herself with the idea that Chris can buy them out etc.