Vincent just gives another low hum and a nod to that first bit information… Before deciding it isn't really worth thinking about the specifics of it further anyways. Why did it matter if he was brought to some out of state holding facility, or whatever? It was jail either way, and he highly doubted he'd be going out into the world again any time soon. That wasn't what happened to people like himself, generally.
The followup question… Vincent zones back in (oops, that sure was a fair bit of just Awkward Silence) and more properly looks at Robert again for the followup question to him. He doesn't look annoyed at the question at all, just… very tired. He hadn't had a lot of energy since being here to begin with, but there's still a further sense of exhaustion at it.
"Similar reasons being… type of crime, you mean? …Possibly. I didn't want to make assumptions, but… I guess if you've killed anyone recently, then yeah." If that was Incorrect, than that was a hell of an awkward thing to just up and assume about another person, after all- But there wasn't much point in dancing around it either, now that Robert had brought it up.
During this entire exchange, Vincent hadn't made a single move to actually Stand Up, and is in fact still just limply sitting against the wall, so even if that WASN'T what Robert was getting at, he at least probably didn't have to worry about Vincent himself doing anything to him or anything if it freaked him out.