Some people love to analyze others because it deflects from their own issues. If they are always busy pinpointing what’s going on with others and randomly diagnosing (usually incorrectly) everyone, they’d never have to stop and think about their own lives and how to improve themselves.

She is a “scientist” yet she isn’t actually one. That one got me laughing. She wants herself to feel important.

It could be she feels superior. But in my experience people who act superior often actuality feel inadequate, unfulfilled and inferior, but to make themselves feel better they tried to put others down.

I doubt her behavior can be explained by having ADHD. Talking over others maybe. Saying offensive things? Not so much. It’s an excuse

Doesn’t sound like a good friend to me at all