I have no trouble including her in those inside jokes on the fly though, and most of the people she would spend most of the time with she has met before (she clicked really well with the close friends from out of town last time they met even), the only crowd of unknowns would be at the gig. But that would only be for part of the evening and I don't necessarily care for everyone in that band or connected to it so I wouldn't be flying off the walls leaving her to fend for herself, and she knows that. I am mostly focused on spending time with those dudes from out of town, the rest are just slight bonus.

Also, I have an equal if not worse social anxiety myself so I would do anything to make her comfortable. Even if that meant we went outside by ourselves for a moment during the show or something. But I get what you're saying, sometimes having your own 'world' inside a different bubble can be nice. I just don't know how I would have navigated that when we would have later transitioned to a less casual setting at my friend's home. And I guess that's how a lot of my social anxiety shows, I tend to not blend groups of friends because I always assume I would be bothering them with having to deal with new people, as I tend to dislike having to deal with new people. Which is probably highly irrational.