I'm going to pull a "if you loved me you'd..."
What is stopping you from doing something like this?
If I pull that, she would totally freak out
You shouldn't initiate ultimatums with your partner. It's unfair to them. She will get angry.
I don't care what she thinks. I'm going to initiate the ultimatum.
Giving ultimatums when in a relationship is not healthy. Your partner and you have the option to be with one another, so giving ultimatums is really just an attempt to try and control one another.