Is she showing me a hint?

In class, I sometimes notice her looking at me, and once she looked away very fast when she was looking at me and we made eye contact. She sometimes also mirrors my actions and movements such as crossing my arms. Is she showing a hint that she likes me?
Yes
No
Maybe
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Update on more info:
-she smiles out of nowhere when we walk past each other in the hallways
-sometimes when I am in front of her she stares at me
Is she showing me a hint?
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