Granite are you able to do some calming soothing things for you to help calm your nervous system down? What you are describing is retraumatization and it will cause a physiological state of hyperarousal in you (being "triggered"). Maybe it would help if you can find some soothing ways to restore your nervous system to "normal". Hot bath, soothing music, warm scents, soft cuddly something, deep breathing, stuff like that.

I don't think your t understands that she was retraumatizing you. She probably didn't even mean to but she did and it wasn't okay. She can't see how much that harms you. She just doesn't now about what she doesn't know about. She doesn't seem to understand the long term affects of complex trauma and the physiological reactions that result from triggers. Because she doesn't know what she is doing she is actively HARMING you.
There is a better way. There are therapists who can recognize physiological hyperarousal and hypoarousal and help you manage it. These are NORMAL reactions to trauma and there are therapists that know how to help people who experience them.
You are not bad, you are not wrong, but your therapist is giving you the wrong "help" for your trauma. Her help is hurting you and she doesn't know enough to see it.