I think that Atypical has been hinting/saying that she believes she is narcissistic more as the result of nature than nurture, although nurture had some part in it. People are scared of the word "psychopath", but Dr. James Fallon had a very good environment growing up, as I understand it, has never been in trouble with the law, is married, is an esteemed scientist, etc.

It also seems clear to me that Underground is more like my dad. It was almost impossible for my dad to be directly mean. Lots of oversights, selfishness, was unfaithful to my mom, etc. Very different kind of narcissism.