I used the myself as an example in the OP, but I'm really interested in trying to say that narcissistic and even "malignant" narcissistic MOTIVES, as opposed to ingrained personality characteristics, are not inherently without value and thus need to be expunged from the personality, as I was sort of (but not entirely) able to do, to my detriment.

So, yes, if you feel threatened, perhaps unrealistically because of the PTSD, but still threatened, your narcissism as you described it, may well kick in. In my view, it's a lower-level "survival" motive. Are you familiar with the Polyvagal theory? That kind of speaks to that, as well as the 4 fight, flight, freeze, fawn responses that I think you mentioned.

I had a fractured, non-whole sense of self. So trying to get those split off/dissociated (because of trauma) parts to work, much less be, together has really been a bear.