I couldn't read all the posts because it scared the hell out of me that a T could be this abusive with their boundaries - I guess it reminds me too much of my own (abusive) mother - on one hand making it SEEM like it was about meeting MY needs but in truth it was ALWAYS about HER.
What you've described with your old T sounds like she is using you for HER NEEDS without ANY real thought as to how it leaves YOU feeling. It sounds very co-dependent on HER part. Gosh my heart breaks for how it must be leaving you feeling.