Any thoughts on this situation?

A cleaning woman in the local supermarket I go to has twice now looked like she was very happy to see me when I walked into the store. I'm not particularly good at reading body language and facial expressions but there was definitely something different from other staff. Other staff, it's a quick glance or a neutral look at me. She looked happy to see me, she was turning her head and had a kind of happy look on her face.

Do you think she's romantically interested?

Just wants to talk to me?

Seems odd and if it was somewhere like a bus stop I would probably strike up conversation but a supermarket feels an awkward place to flirt with someone.