EMERGENCY, PLEASE HELP ME UNDERSTAND THIS GIRL?

So there is this girl, in two of my classes, and she keeps staring at me, acts really nervous around me -- She sits right behind me in one class and in the other she and I sit at a table together with other boys. And at one football game, I have heard she saying to her friends: "Dats her" and her friends replied: "She is so pretty." (By this, I know she talks about me to her friends. Does that mean that she might have a crush on me or finds me attractive?

EMERGENCY, PLEASE HELP ME UNDERSTAND THIS GIRL?
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