Peaches, you have been with your T a while, so I bet she actually does know how easily you feel unimportant and worthless. My view of therapy is pretty different than what you wrote. I don't expect the therapist to avoid a person's triggers. I think this might not be helpful to the client at all. I wouldn't want my T to walk on eggshells around me for fear of triggering me. When a trigger comes out in therapy, that is a good thing, because then it is manifest and we can work to try to understand it and lessen its ability to trigger. I wouldn't want my T to alter his way of being in the world just to make me feel better or keep from upsetting me. I prize authenticity a lot, and expecting my T to avoid my triggers would feel like I was asking him to be false. It is up to me (or us) to work on my triggers. I don't want to go through life having a boatload of triggers (yes, I have a lot!) and expecting that the way to feeling better is to get others to avoid them. That is a losing battle. I think this is a really rich area for discussion with your T. Have you told her before that you have an expectation that once she is aware of a trigger for you, that she will avoid it? I think if you don't both share this expectation, that it could be a source of some dissonance and misunderstanding.

I hope you will go see your T when she returns. I hope you can find a way to let go of your hurt over this, and that she can help you with this if you need her to.