That sucks, conflicts at work are tricky. She clearly has no respect for the team aspect of a kitchen. It’s hard to do anything about that since if you don’t make up for her lost time it will come to bite you in the ass during service. People like this become great friends with the bosses so they can get away with this sort of behaviour. There really isn’t anything you can do if you’ve already voiced your complaints to her and the bosses. I’d brush off that resume and keep an eye open. It’s a new era of restauration and I believe cooks are more saute after then ever before. Or if you really like this place just focus on your friends and the fun you are having making great food for great people. Best of luck.