((((Googley))))) I can completely understand why you would be upset. It is a big deal to write it out and have someone read those events and personal feelings. I have difficulty even writing things down for fear it will be found and read. Id be upset, too.

I was also wondering why she wanted to keep it- to look at in your chart later to get a better idea of how to move forward with you maybe or just to have as part of your chart? Desk-t has some VERY personal writings of mine and I am REALLY unhappy about it. It freaks me out. I wont be calling to ask for it back, I just have to live knowing that stuff is "out there."

I agree with the responses you got that it would be best to bring it up to T about why she wanted it and how it made you feel. I am also hypervigilant at those moments and she should know that you were extremely on guard at that time. I would be, too. She is a good T, I think she will hear you if you bring it up.
Hugs and hugs