The back story to this is ridiculous, but please bare with me as i feel it is important.

It starts with this girl i work with. She is driving me up the wall. We are friendly to one another and can talk on a first term basis, however she gets upset over the slightest things. Misinterpreting my actions and what i say. She then gives me a sour face and a nasty attitude. I put on a positive and friendly front against her, and it wears me out. Plus it is not my intention to hack her off. If it was, we wouldn't be talking and i would have gotten a slap. I understand she's a adolescent, and she hasn't had the exposure to social graces or a variety of people from different backgrounds and experiences. But i don't deserve this stick.

This being the second time she as over reacted, has sparked some important issues now; especially what is important to me now. I know the main stuff that is important that is my degree and career, but now how to prioritise my relationships?
How do you priorities what is important to you?