I want to knock this woman's fucking teeth out.
Why do you want to hurt that woman?
I just don't like her because she's rude, annoying, and selfish
While it's okay to be upset at a person's bad behavior, it isn't appropriate to want to use physical violence against that person. Instead of resorting to physical violence, you should try to discuss the issues you are having with that person with them calmly and rationally. With patience and understanding it's possible to resolve whatever issues have come up between you and the woman.
I brought her flowers, chocolates, and I cried in front of her. I think that that's enough.
Feeling violent towards someone, especially a partner, is troubling. Have you talked to someone about your feelings?