I navigate a relationship with my mother. I have learned the trick- to not tell her anything upsetting, only say good things, do not criticize her, and keep it brief. She hasn't been diagnosed with anything, would never think there's anything wrong with her, nor does she even believe psychology is valid (they're all quacks!). So we speculate she is Narcissistic, Histrionic, Borderline Traits (so do I) and goes so off the deep end that we think she even gets psychotic (or she is the best manipulator in the world!)

Isn't that strange? I am still not sure if she fakes it!