Regardless if you choose to stay or leave this position I think it is better to learn how to deal with this kind of people. This kind of people think that ever

Regardless if you choose to stay or leave this position I think it is better to learn how to deal with this kind of people. This kind of people think that everything happens because of them. They think everyone is replaceable, etc... Don't try to proove anything to her and don't necessarily do things because she asks you. Center only in your job and in yourself. If possible, create side projects and succeed in these side projects as well. Free yourself from this single position and from this mind game. If you center in your career (job + side projects) and in yourself, she'll not be able to play her game with you and everyday you'll see you have more control over your career and over your life.