My friend was not adopted, but I call her real dad her 'birth father' because he left so early after she was born.
Her mother did marry a new man when she was quite young, but that is as close as her story gets to dysfunction. She has always hated her new father for taking up part of her mother's attention. She reminds me very much of Eric in that attention was her number one goal, always.
Has anyone else noticed cases of antisocials who seemed like they were spoiled too much? No abuse, and quite the opposite? That is probably dysfunction, if you think about good child-rearing. It surprises me how much it seems to have let my friend foster her most narcissistic and thoughtless parts of herself.