Discription of Events: Pulled in front of my car with not enough space so I had to slam on my breaks on the high way. When her indicator was on, I gave a warning honk that I was right there but she pulled in anyways and grew very angry, yelling profanities through the window when I drove past, not looking at the road. At this point I was in the middle lane, and she tailgated me at an extremely close distance, still yelling and showing obscene gestures. The entire time, she was not looking at the road at all while she was driving, just at me to show me how angry she was. It was very scary to be driving on the road with her.