My sister Lena’s friend regularly screamed at her, made fun of people, was ableist, etc.
She is on-and-off nice and mean. Right now, she’s nice. Before, she hated Lena. Now, she likes Lena. In a few months, she’ll hate Lena again.
Lena’s friend believes nothing is ever her fault and refuses to get help. She is very secretive and guarded, and acts very paranoid. Along with her defensive behavior, this makes me think she’s sadly being abused if she isn’t just a jerk.
She has quite the ego, but I’m not sure if it can be justified. Lena wants to be her friend and help her even with her behavior.
(She apparently has NPD)
If somebody has been diagnosed with a mental disorder it doesn’t give them a free pass to be harmful to others. Their actions are still their responsibility. The diagnosis is there to help her explore options for managing her condition, getting treatment or medication. It’s not there to give her an excuse for being a bitch.