Flirty or friendly?

There’s this coworker I started working with this week for just couple of days. Before I hadn’t really worked with her or even talked with her. Like she started before me but a month into when I started she had family issues and was out of town for 5 months and just came back. I’ve been really swamped with work so our boss asked her to help me. So basically I’ve trained her on a few things to help me with and just messaged her now and then to make sure it’s going okay/she needs any help. All normal. Since I’ve started working with her keeps sending me the smiley face emoji with hearts. Sometimes it’s just that with nothing else in the message. I thought maybe she sends that to everyone but in our department chat she never sends it she’ll send more casual emojis if she ever sends one. I get she may just be friendly but it does seem odd to me lol. Like if we had been working together awhile, knew each other and all, it wouldn’t mean anything. We were at first talking about work but aswe talked to more it was more small/personsl talk and all. That’s normal I know, but our office doesn’t like that, we’re all busy, and they kind of micro manage. We have to clock in with our fingerprint. I remember once she was rushing in the morning to clock in on time, so she’s someone who listens to it/takes it seriously. I know could just be friendly, it just seems odd.

Flirty or friendly?
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