I find that so much of therapy is feeling attuned and that sometimes the conversations (concerts) that feel like "not therapy" can be the most valuable. And whenever I go into therapy with an agenda, it ends up going wrong. Perhaps your first instinct to just flow with the conversation was the best one? Also, the time to deal with interruptions in therapy scheduling, it seems to me, is when you feel confident and settled, not at the end of the session or when it's not something you can handle. Seems that topic might be worth exploring.
Anyway, stupid therapy, Stupid session is the best title for a thread yet and you will garner plenty of support from us on that one alone! Hugs! Hang in there! You're brave to be able to unspool all of this for yourself. And you're learning! MCL