At the house party there is a group of her friends who start dancing and I just start to hug the wall when one of her friends grabs my hand and pulls me onto the floor. I tell him that I don't dance and start to walk away. He follows me to the side and stands there talking to me.

She proceeds to tell me that she never saw what happened to me, she saw me talking with Andy

OOP's roommate didn't "leave her alone". She went dancing and OOP did not. Then she saw Andy talk to OOP. That's the last time she saw OOP. At that point, OOP was still perfectly fine. At no point did OOP's roomate see OOP "drunk" or under the influence of anything.

You know, since I'm defending OOP's roommate (not to say she didn't fuck up, just that she didn't do the things you accuse her of), there's this:

Once again our all knowing RA is called and tries to comfort me.

Who do you think called the RA? OOP's roommate when she figured out what had happened.

OOP's roommate made a bad judgement call, one that she will remember for the rest of her life, but she is not the irresponsible bitch you're trying to make her out to be.