Assuming the police find any physical evidence of abuse he's going to jail. Actually, not "assuming", he violated a court order and stole from his mom. He's definitely going to jail. So he's going to be spending a bit in jail in any circumstance. After that it depends on whether any of this goes to trial or not. Chris is probably going to be given a public defender (unless he can somehow scratch up the money for a lawyer, which I doubt). If chris is like most people this public defender will probably tell Chris to plead guilty for a reduced sentence. America's justice system is set up so that as little goes to trial as possible, namely you can get a harsher sentence if you try to fight the charge then if you just plead guilty.
Now, Chris is a narcissist with little understanding of consequences, so I could easily see him trying to fight this. He will lose that trial. Let's be clear, this is a transgendered (in theory) person in a largely rural part of the south who is on audio openly admitting to raping his elderly mother. The people deciding Chris's fate are going to be local church moms, the kind of guy who installs air conditioning for a living, and maybe the occasional stoned idiot who just graduated college. At this point if his defense isn't horrifically incompetent they'll try to make the argument that chris needs to be in a mental institution or some other long term care facility. A note about the "insanity defense", it's so common nobody takes it seriously and it's actually very hard to prove. Chris's autism and psychiatric history might get him some leeway, and his internet presence could give his defense years worth of material to work with (god help that poor fucker).
I don't know if the jury is going to give a shit. The great flaw in the justice system is "your peers". Your peers aren't exactly bright and noble. They'll listen to that audio, vomit in their mouths, and then that'll be the end of it. Maybe that SHOULD be the end of it, I don't know.
Chris is looking at multiple charges, and he just slapped another one on there by stealing from his mom (theft being a crime even in normal circumstances). If they convict chris is going to prison for a long time. Once he gets there the administration would be extremely stupid not to put him in protective custody (this is a mentally disabled transgendered person who raped their mother and thinks cartoons are real, he's an easy target, and while you might ask why somebody would bother just know that convicts will extort you over a fucking candy bar from commissary, never mind just for fun).
"Protective custody" is basically just solitary confinement. So chris is going to be in a small concrete box without any stimulus for years on end.
When he gets out he's going right to the street. Maybe prison will "teach" him something, but I doubt it. I don't see Chris getting a job at a fast food place or something and making enough money to at least eat and maybe get a room somewhere. He'll be in the gutter. I wouldn't be shocked if in 20 years one of you runs into him on the streets of Charlottesville begging for change, assuming he doesn't find a way to immediately get his ass sent back to jail.