I am having a difficult time seeing how trust is implicated here, unless it is trust over her memory. People do change how they run their businesses, including therapists, from time to time. Hopefully, as with your T earlier, she explains it as something about *her* and how she needs to do her work. I don't see a therapist who changes how she does her work (I've been through several iterations over the years with mine, and while I don't like it, it doesn't impact the therapy), is somehow "mistrustful" because relationships are dynamic. Individual people and the dynamics between them are not robotic, and people can and do change.

I think there's a lot of similarity between this issue of your therapist "taking something away" and other threads posted here recently or more distantly. It's an issue that comes up a lot. It's possible this isn't about the frame you're using to make sense of it, which is "trust" and "taking something away." I'm sure you agree intellectually that your T can run her business any way she sees fit. It isn't personal, in that it's not being taken away from *you* as opposed to others. But it feels personal, it pops you through some kind of bad-feeling trap door that may be rooted in something historical, as it is actually or symbolically connected to the past in ways that might not be obvious now.

So you can either end your difficulty by leaving this therapist because she won't do what you want, which is a perfectly legitimate choice, as is any other. You can work with someone else who does emergency appointments, at least for now, but there's no guarantee in the future that therapist will keep her business or your therapy static and not "take something away."

Or you can see this issue bugging you as an opportunity to learn something about the thing that is not about your therapist "taking away" emergency sessions. It may lead you somewhere interesting. I'd at least be curious about where this comes from, as any overreaction in my experience is based on something that both doesn't sit right with me in the present and is made more painful by something being pulled from my past. The overreaction is like a message from your self to pay attention to this thing, but in my experience, the thing isn't about the present, it's about what the thing means according to my past.