How do you respectfully tell a therapist you no longer want to see them?

She is telling me to do things that are very retraumatizing. I am very frustrated and I worry I will come off rude.

She wants me to just “think” about my mom for 30 minutes, 3 times a week. She doesn’t care how I do it. It is sending me down a spiral that causes me to have panic attacks. I am not an expert but I know enough to know this is not helpful in any context. I don’t think she gets how bad my situation is here, and I just need to see somebody who will let me talk.

I don’t want to come off as attacking, but I want to be honest as to why this is not working for me.

I would give her a chance depending on how she responds to what I have to say, because maybe I am not explaining myself right.