Mentally ill people free associate in their head. Chris has been doing that for years. He'll ramble on about his binaural beats or the dimensional merge as if they are things that really happened. But those subjects are benign. Just because he says this, it doesn't mean he's done it. If he has, there will have been a steep decline in Barb in a short period of time. The people looking her over right now will be able to know one way or the other. I'm willing to bet $5 that it never happened and Chris is just blathering in an unwise way like he always does.
That said, if it didn't happen, that doesn't mean things will go back to the way it was before. Chris may not realize this yet, but he can't unring a bell. At the end of this investigation period, his world won't go back to playing with toys at 14 Branchland Court. Either way it turns out, this is the finish line for that. Both Chris and Barb are not in their right mind. Any judge will see that. There's no way any authority is going to let them go their own way any more.
The county will take care of Barb until she croaks, which will likely be not that far off. Some governmental entity will step in and declare the house a health hazard, and the house will go poof. All that will be left will be Chris. The county won't want to babysit him forever. They will set up a life for him and if he doesn't toe the line, he will be on his own. We know how that will come out. Chris will melt down and make things worse for himself. This is the worst possible scenario for Chris. Kickstarters won't fix this. It would probably be better for him to go to jail.
The news won't touch this with a ten foot pole. It isn't the sort of thing that plays well. No one is going to come to Chris's rescue either.