The roommate from hell who almost made you dropout of college your freshman year didn’t change. She just grew into a mean woman and now she’s your boss. Unfortunately she brings the same messiness to her team or a department,.
Those messes are a result of her inability or unwillingness to dialog professionally in order to communicate her vision. She may also have some issues with compromise. If you don’t manage the situation in a way that makes her value your contribution, before long, she will use antagonism and negativity to manage you.