If a female coworker uses emojis in response to a work email that you have sent is she flirting?

Let's say the girl is in her late 20's.
If a female coworker uses emojis in response to a work email that you have sent is she flirting?

Let us say this email is sent in response to a congrats email on a work project.
Yes
No
Either or Or. It depends on the person
Select gender and age to cast your vote:
If a female coworker uses emojis in response to a work email that you have sent is she flirting?
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