It's great you have a good crisis plan you made with T and that you are following. Good job!

From the issue itself I do not understand where the big hurt and anger comes from. Sounds like a minor miscommunication between you two. With a T that has proven to be kind and helpful. But she is a human who makes small (and even big) mistakes, might not have perfect memory, might not have a perfect day and so on. Sounds like you make a huge deal out of nothing really. I hope you get things talked through soon, like you always do. Good luck!