Is Plaza obssessed with portraying mentally disturbed young women?

She's so GOOD at playing batshit cray. She has amazing energy and you can't look away.
Not everyone can go to 10. She goes to 11.

I say it comes naturally to her, so why not keep doing what she does best? She's interesting and... crazy hot! 😏

She plays it so well, it is scary.

She isn't a very good actress, so she has limited range. All of her character portrayals are very similar.

More likely it's what people are offering her. Hollywood loves to typecast because it's run by a bunch of imagination-impaired bean counters. They don't want to fund a project unless it's of a type that has made money before.