ogintherapgame
If you want to teach them a lisp as a first language, at least use Racket, which actually have modules designed for education. I think it's less of a headache to use a language with a more modern syntax, like python or pyret, but Racket is excellent of course. You can introduce lisp later in a undergraduate compiler/interpreter class so you don't have to talk about parsing for a month.
He's just a creep, they are pretty common, confident outgoing girls will turn down a creep every weekend. Does not warrant public shaming. I'd be pissed if some girl i texted "Wanna get it ;-8" on tinder, in a blizzard of hormones, three years back, decides to public and destroy my career. I'd be pissed and it wouldn't be fair. That said i'm glad she did, because he sounds like a complete tool. The perpetual conference go'er crowd is full of weirdos.