My Co-Worker is Manipulative, Mean and Evil

I hate my coworker. She is manipulative, mean, and evil. If she doesn't like you (which is anyone who doesn't agree with her or kiss her behind) she will give you the cold shoulder at meetings and in the hall. She loves to gossip about anything and about everyone. She is a bully, whom management just promoted. I've spoken to my supervisor regarding my coworkers agressiveness. I was told that they have talked to her about it, what this means is that my coworker will just be nice around them, and turn into an evil witch once they're not looking.

(Posted by Evil Co-Worker)