Does this girl have a crush on me? Tehehe

I work in retail. And there is this shy, reserved girl who works in a separate department to me named Jessica. Keeps to herself and minds her own business (so I've never bothered her).

I'm very outgoing and get along with most people, but I also try to read the people and respect those who don't want to talk (maybe she hated everyone haha).

Anyway, I've noticed Jessica eavesdropping on a few of my conversations. I was talking to a friend of mine at work one time who is also a girl, named Rebecca, and Rebecca wanted to know what kinds of girls I'm interested in.

As I was explaining I turned my head incidentally in the direction of Lucy, who was 100% listening into our conversation because she immediately went red in the face, looked the other way, and then ducked out of visibility.

As of this week, I've officially been transferred into Jessica's department. Nobody told her apparently because when the manager explained to her that she would be training me she freaked out. Clammy, jittery, wouldn't hold eye contact, kept stuttering and stammering incomprehensibly. Whenever she would try to show me things she would speak way to fast and keep dropping things and then crashing into things (I felt horrible for her).

After we got down to our task and she was no longer ''teaching'' me. She broek the silence by nervously saying:

''Ex-cuseee mm-m-me. Can I ask you something?''

Me: Shoot.

''Can I ask your age?...''

Me: Uhhh... (I'm thinking in my head that's random)

''Haha!!!!! It's okay if you don't want to answer!!!!''

Me: How old do you think I am?...

''Uhhh... Early twenties''

(she was correct)

But I am suspicious why it was literally the first thing she wanted to know about me.