That story about the black guy putting his arm around Hannah has always bothered me. Assuming the witness wasn't lying about this and assuming LE is correct in stating they have no evidence that JM and HG knew each other, I can't wrap my head around her willingly letting a total stranger invade her personal space that way. Like many other posters here, I did some incredibly stupid and potentially dangerous things when I was younger and more naive, but it is completely counterintuitive to me that HG would have allowed such contact from a perfect stranger, no matter how impaired she might have been. Maybe after he'd chatted her up for a while, but not just out of the blue.
The only way this scenario makes sense to me is if WG was telling the truth (not implying I think he was lying) and she looked in physical distress. So JM approaches her, saying something like Hey, do you feel all right? I'm a nursing assistant (or whatever he is) at the UVA hospital, can I help you?
That's why I keep asking if there the video of him putting his arm around her has been released. I am oh so curious to see her demeanor and/or body language.