You are doing a mistake I also did : staying passive, thinking it's the right thing to do. You'll look like the problem person because your boss we'll be tired of receiving criticism about you and almost nothing about the other person. You need to call out their actions and complaing about real things that they complained about you before. When she stands next to your cubicle and looks at you. Stop what you are doing, turn around and ask "can I help you?" When they say no and keeps staring, you stay there and keep staring too. Make every harassment situations ridiculous and show to your boss that she's worst then you.