Girl's Behavior

She hates me but keeps staring?

So there's this group in my class. They're really 2 faced about other people, even each other. I heard they'd said a few things about me even though I'd been nice to all of them. And I've been around when they've said stuff about others.

This girl is one of them and we had a group project. She never bothered to contact me about it till the night before and I had already done it on my own. Anyway she asked me why I never messaged her back and I told her straight. I knew her and her friends had said stuff about me and I didn't want anything to do with any of them.

The teacher confronted both of us about how the focus of group work is to work as a team and this girl kept looking at me then left the room crying. Now she keeps staring at me in the corridor like. every time I turn around she's looking. Not always just straight on, sometimes out the corner of her eyes.

This has been going on for a few months.
She hates me but keeps staring?
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