I think then it would be worth it to let your t know she did upset you and to try to talk things through instead of just up and quitting. There's a great opportunity here for empowerment and growth. Learning to stop avoiding is extremely hard, as I know all too well. Once you do it though, it does get easier. And there is no safer way to start this process than to practice with your t.

I completely understand your feelings and, honestly, I would have absolutely felt the same way. Your reaction is very common for someone with an attachment disorder. Your thoughts may seem irrational to people with secure attachment styles, but rest assured, they are not wrong and should be explored with your t.

Can you respond to t's text rand just let her know you are very upset, and in crisis right now? You can always respond to setting up an appointment tomorrow (which, I hope you do wind up taking).