Girl looks to the side when walking down the hallway?

There is this girl that lives on my floor that I like and she looked away off to the wall when we walked past each other. Is this a bad thing or is it just an awkward situation? I don't know her and have never talked to her.
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I know it isn't flirting but I just want to know if it is a bad thing or means nothing? Does it mean she definitely isn't interested or finds me unattractive?
Girl looks to the side when walking down the hallway?
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