Kiya, I'm sorry you're having such a hard time. I am on the last few days of my T's vacation and it feels like it has gone on FOREVER, not just two weeks. My emotions are all over the place, both with the stuff we've been working on and my feelings about T.
I am glad you have an appointment scheduled with the back-up, even if you you don't feel like it will help. Making contact with someone else is a good thing.
How long is your T gone this time? Do you have a plan for what you can do when things inside get stirred up?