What should I do? I'm thinking of this petty roommate squabble.
Why is this on your mind. Do you want to fight with your roommate?
Yes I do. She think she thinks of this as a game, but I'm here to win
You need to be a better person and stop this fight. You need to get along with your roommate better.
I don't care, I'm going to win.
Claiming that you will win shows that you are playing some sort of game. Instead of fighting with your roommate, talk with her about your concerns. You should try to get along with your roommate instead of having conflict with her.