I'm going to leave my roommates clothes on the bathroom floor.
Why not just throw them in the hamper?
Because she's a dirty bitch and I'm sick of her.
It's fine that you don't want to touch your roommate's dirty clothes, but it's not right to call her bad names. I think you should calmly let her know that you find it rude when she leaves her clothes on the ground.
That's the problem with having a girl as room mates. They are always messy bitch.
I think that talking to her about these habits is the best way to go. I get that you do not want to touch her dirty clothes, so she needs to keep them cleaned up.