While I could understand T not remembering things mentioned briefly several months ago, I also see why you'd be hurt that she didn't remember. It's so easy to think it's because they don't care or you aren't important or something, rather than her just not holding it all in mind. She's likely to have a number of clients and won't necessarily check older notes before each session.

It would be worth talking to her about it because it's had such an impact on you.