I'm thinking of almost starting a fight at my friend's workplace
Why do you want to start a fight?
It doesn't matter to her. She just ignores me.
You should not go to start a fight for no reason. Whether she ignores you or not you need to try and be the bigger person in this scenario. Also, since it is your workplace you need to be sure to remain mature.
Let's do it.
Fighting in this scenario is just a bad idea. You are really escalating a situation that could probably be talked about pretty easily.