So maybe I'm a terrible person. I probably would have done exactly what you did. (I didn't read through the entire conversation, but I did read through the first few pages, so I'm sorry if I missed anything.) I saw a therapist once for emergency help with my PTSD. I couldn't talk, and was spiraling fast. He soon accused me of abusing the system, and yelled at me. He told me I couldn't come back to the college counselors. For the first time in my life, I walked out of a session. Though I had been told previously to come as often as I needed by separate therapists.
Upset, I reached out to a previous therapist and told him what happened. I didn't know how to report the counselor. The therapist I spoke to defended the counselor who yelled at me, and told me I had been coming in too often, and all the counselors had decided it was time for me to stop. (I had been told that coming in for regular sessions couldn't be long term, but was told continually that emergency sessions were just fine. I had never been told that I needed to stop coming in altogether.) I was very upset of course, and tried to explain to the therapist through email how the counselor had treated me very poorly. It ended there, he wouldn't speak to me anymore.
I totally get it. I would never use my real name on the internet. I would add in false information so people couldn't find me. I can't use my real name right now, and falsify things all the time (in a legal way), so my abuser can't find me. I totally get the frustration, hurt, and anger. Maybe, I'm a bad person, but I don't think so. Honestly I'm probably giving you bad advice, but if you changed anything, I would use a totally fake name (not just your friends name), write something accurate, but change a few details and say you have, because your ex therapist tracked you down! I would also say in your review that your ex therapist tracked you down, told you to remove it, and that's why you're not using real details! If you want. I'd suggest maybe even adding that you're reporting that to whatever jurisdiction your therapist is under! Then actually report it! I'd keep it polite, to the point, but factual. Things you can change could be names, details, etc. but try to keep it close to what really happened. I'd also block your ex therapist from everything so they can't reach out to you again.
I felt the parts you did write that were true, were very good. I think if you are going to rewrite your review, I'd look up legalities of defamation and follow that. I think as long as you can back up whatever claims you have, for good or bad, you'll be just fine.
Bad therapists make me angry. You've had enough abuse in your life. You don't need it again from someone who was supposed to help you. That's my opinion on the subject. I don't know if it's any good, but there it is.