She is definitely a loose canon and livewire, manipulative as well.
I don't think she will be fired. I am just scared she will make things very difficult for me at work and be even more passive aggressive then she already is. I am very worried about her reaction but at the end of it all, what counts is that she shouldn't be allowed to not pay if other staff have to. That is just ridiculous as she certainly isn't anymore special or important.