I'm going to start a tense situation with my roommate.
Why would you cause tension with your roommate?
She's aggravated me and I want to get her back.
If something happened between the two of you you should talk out the issue. Roommate issues can be tricky, so instigating a problem for no reason is asking for trouble.
I don't care about causing problems, I want her to feel uncomfortable.
You should have a talk with your roommate and tell her how you feel. Causing a tense situation won't make you feel any better. Work out your differences and find a way to cope with each other.