Girl I don't know looks at me everytime I walk past her, does she like me?

This girl in my uni lecture and tutorial class who I don't know looks at me everytime I walk past her. Especially when I turn up to class to wait outside and she is there and I notice her looking up at me quickly. She also has started sitting near me in lectures like sitting behind me sort of thing. Today she walked out of the class today before and i was walking behind her and she held the door open for me when after she walked out. I said '' Thanks'' but she kind of was just staring into eyes and said nothing and turned around and kept walking. Also during that class she laughed when I said something to tease a friend who was sitting at the same table as her.
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+1 y
i mean when she held the door open for me she just stared blankly into my eyes but said nothing when I said thanks
Girl I don't know looks at me everytime I walk past her, does she like me?
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