Does she was flirting or just being nice?

Okay so I work at this restaurant and been talking to this new girl for two months or so she’s pretty so I don’t think she’s is gonna be interested in someone like me, so I don’t try to flirt with her or anything, and don’t initiate conversation unless she iníciate first, I work in the drinks area and she’s a waitress so she send me commands so I can read it on paper and know what drinks I can do (on a small printer) but yesterday she sent me a command but she put “handsome” after the command, I just read it and don’t think anything about it, like maybe she just trying to being nice or something, then a couple of minutes we saw each other and she was like “did you read the command?” And I was like “oh yeah thanks” and just continued to do other things and she went silent, but I don’t know is she was just trying to being nice or maybe she was really flirting? Just curious.
Does she was flirting or just being nice?
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