Well, here is the update, wish it were something different.
I spoke with her at length last night. When I led up to my moment of telling her the truth (he does not live there, I called and there is no perm resident with that name). She then said, "He LIVED there. He doesn't anymore. I don't know where he said he lived now, but he lived there this past June." We then went off on a million tangents on why I don't trust him from his vague job to his intentions in the middle of nowhere when he has NYC. She defended every bit of it.
It is obviously too late. No matter what I said, she gave her 'logical' response. I am almost starting to wonder things like, does she really know what he does and maybe it is something she does not want to share (legal/illegal, the 'adult' business, who knows?) and that is why we don't know.
The PI (a friend who was doing a favor) could not come up with much with only his name and his Carlyle address. All we know is that he has not been arrested in NYC or NY state. Well, that is of course under the name we know him as.
Call me paranoid, but I just don't trust the guy. I really hope my friend proves us wrong because there is nothing we can do. I gave it one shot and she was not receptive to any of my concerns. We then had to agree to disagree. I said what I had to say, and now I can only hope for the best.
Thank you for all of your concerns. Let's just hope my friend figures this out on her own, or there are some really good explantions we just don't know yet on why this guy is so sketchy.