I’ll put a link but throwing your drink onto someone is assault in California.

Okay, you’re right, let’s not assume anything. If we’re not doing anything wouldn’t it make sense to discuss it with her and inform her of the punishment if the findings go against her? I’ve read a few articles and in none of them have I read anything that makes me feel like they were going to punish her, just that there was a potential punishment. I’m not sure how else they were supposed to handle it, because if they didn’t inform her that she could face punishment or what the punishment was then she’d have an argument that they’re blindsiding her.

https://www.hashemilaw.com/practice-areas/criminal-law-overview/california-define-assault-simple-assault/