Your T's reaction was pretty defensive and just all a bit sh-it really. BUT was it really bad enough to make you never go back to her? What about the 18months plus you've been seeing her, hasn't she met your needs in lots of other ways? Isn't the relationship you've both nurtured worth at least going back and talking it out?
I am in no way suggesting her reaction was okay, but maybe if you're frank about how she made you feel it could be a really valuable learning experience for you both. I understand how raw this all feels for you, but maybe just take some time out to feel that and let it pass a little before making big decisions about not going back.