I hate those appointments that just don't seem to go right and you have to wait a week to try again. It must be much harder to have what you feel to be "your" time taken by others before you get there. I can see why you feel so disconnected. I wish your T had thought about that when you all were talking or that you had done a mock horror, "What, you gave some school child MY appointment time on Tuesday?!!" and pretend to be thoroughly dejected I wasn't above making my T feel a little bad about being forgetful, especially if she didn't catch it herself, first.

I do a lot of work with my dreams and some dream experts say to play with alternate endings if you don't like the one in the dream, to better understand what the dream is saying to you. Were I you, I'd do that with this appointment, pretend it was like a dream and I'd think of some things I would have said to T during the session (and how you think she might have responded) and in this instance, at the end, with scheduling a next appointment. My appointments were truly "locked in" and we didn't ever schedule them, just said "see you next week" but I had two sessions back-to-back and I imagine those would be harder to schedule overall so one would have to make sure they were the same time and that that time was kept clear.

Can you email your T at all or call her and tell her you are feeling disconnected? Maybe a one minute phone call could help boost the connection until next Thursday when you can discuss it in more detail?