Oh, it sounds like things are really difficult at the mo, but I thought your letter to T was great. I often write things down and take to T when they are difficult for me say, and we usually go through each thought/feeling. T will take responsibility for the way he said/wrote something and will understand where I am coming from and how it made me feel to rejected/vulnerable/abandoned etc.

It gives T a chance to give his version of events, and I usually find that I've read too much into something, and have catastrophised it or thought it meant something negative about me/how he feels about me.

If you do give the letter to her, I am sure she will understand how you feel and will want work with you so that you have a better understanding between you in future. As the others have said, she sounds like she really does care. Good luck