She's probably angry, which is a perfectly valid emotion for her to feel.

Nobody will seriously think you're a "psycho" for doing this (and if they do, that's not your problem), however it isn't what people consider to be "normal" behaviour. I would however describe it as "unpleasant".

Again, think about it from her perspective. The best thing to do now is to try and prevent further behaviours that would make her feel uncomfortable.

Find something that brings you joy (that isn't her), focus on that, block all her socials (IP block them if you have to) and when you get that urge to check in, focus all you can on doing literally anything else but check.

It's hard. It's brutal for the first few times. But it'll get easier.

Wishing you luck!