A cashier lady at a Korean restaurant kept staring at me even after I caught her looking at me. Why would she act like this?

Usually the person staring turns their gaze away the second they get caught, especially when the person being stared at makes direct eye contact with them. I was waiting for my food at my table when this happened, she stared at me from behind the counter, and I was literally the only customer in the restaurant at that time. When I noticed her staring at me, we made direct eye contact for a moment, and I actually broke my gaze with her before she broke hers with me because I felt shy. And no, she wasn’t staring at me because my food was ready or whatever, it wasn’t. She was also running her fingers through her hair as she was looking at me. What could have been going through her head?

A cashier lady at a Korean restaurant kept staring at me even after I caught her looking at me. Why would she act like this?
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