Don't know if it will help but there is a 2014 book that seems like it addresses the situation a little bit. It's called "Traumatic Narcissism", subtitle "Relational Systems of Subjugation" by Daniel Shaw.

The last chapter is entitled "Analytic Love Revisited: Narcissists 'R' Us".

I expect you're already aware of a blog several years old about "Is your Therapist Retraumatizing You?" There was nothing there except a warning so that clients could take care of themselves but I was too unaware/out of things several years ago so I don't think it could have helped me then. And who is going to look for an article like that before they've experienced therapeutic trauma? It just seems/feels to me so much like malpractice but according to my state's ethics code it doesn't seem to be. Eventually . . .? ? ?