I want her to be uncomfortable in the situation.
What did she do to make you want to make her uncomfortable?
She is a real pain in my butt on a daily basis.
Just because you don't like someone it doesn't give you the right to harm them in any way. Don't make things more difficult for her than it has to be.
You don't understand. I'm going to make her life into a living hell.
If she annoys you it seems like it would be easier to ignore her rather than to go out of your way to cause her problems.