Yeah, I'd direct her to information that allows her to educate herself so she can make her own decision. We often can't "diagnose" the people we LIVE with--I don't think you're going to be able to do that with someone you've met once or twice. Plenty of non-alcoholics have embarrassing drunken incidents. And if he behaves like a jerk, that might be all the reason she needs to move on. It's not as if she has to identify him as an alcoholic to do that.