Wowza. I mean...hopefully they will all be on their best behavior when they meet her? And if they're warned ahead of time about it there will probably be less weird questions.
Uh just in case though, is your girlfriend good at deflecting uncomfortable silences?

That's the hope, my friend Liz is setting us up so hopefully it will be better than last time. Liz knows me pretty good...uh especially since we sort of dated for a while.

And that's okay, so long as you don't let that be the focus on your connection with her.