I'm sorry your T had to cancel at the last minute. I know T's are people too (pretty sure, anyway), but we need them to be strong and able to take care of themselves so they can be there when they say they will be there. Who wants to lean on a wobbly post?
I admire your email and expecially the wonderful way you expressed yourself.
I notice you say you are 'bummed' and 'upset', and then worry that she'll be angry with you....I wonder if it is that you're angry with her and that is very difficult and making the whole situation feel even worse, even scarier. (((( hangingon))))