Why would a girl never say my name?

Anonymous
I know its kind of a silly question, but I'm just curious. I have this co-worker I kinda like and we do talk and joke around and stuff but she never says my name (at least not very often). She greets everybody with a "Hi (insert name here)!" with me its just "hello" or "hey". I guess it would be normal with people she is close to to use names, but even co-workers she doesn't interact with that much will get "name recognition" and its not only the greeting, even when talking to people she will insert their names here and there. Its not like I have an overly complicated name, its very common, any particular reason for not using somebody's name?
Updates
+1 y
Yes, she knows my name.
Updates
+1 y
She has known me for a year and we talk everyday, so yes, she knows it. She started a year ago, that's the same frame of times she has known other people working there (with whom she uses names) and more than a lot of new people that just started (with whom she also uses names). She will use my name if she is calling me over, but never in a conversation or when she says hi ir we are talking and yes, that's what makes it so puzzling since she uses everybody elses.
Why would a girl never say my name?
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