I'm going to be sharp with my colleague
Why do you want to be sharp with her?
She is really getting on my nerves.
Sometimes coworkers can get on your nerves, but it's important that we be polite to them. When we're sharp with our coworkers, they are not going to like you. Instead of lashing out, we should respond to them with patience and empathy
I don't think I'll be able to control myself soon.
If you are not able to control yourself, you need to get some professional help. It is not right to be lashing out at people and have no control over it.