A girl rolls her eyes when I say "hi"?

I'm not into her or anything, but I try to be friendly and say "hi" but she'll roll her eyes and not say anything back. Should I just stop trying to be friendly and stop saying "hi"? We don't have any history and have barely talked, so I have no idea why she's acting like that.
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+1 y
I don't want to reward bad behavior by trying hard to get her attention, but should I just do the opposite and ignore her?
A girl rolls her eyes when I say "hi"?
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