Help please, what should I do about this girl?

Ok well I really, really like this girl at my work. But I'm not exactly sure what to do about it. She's really nice to me and stuff, like we're acquaintances but I don't think we're friends. She's definatly friends with everyone else at work, but I'm like brand new there so maybe that's why we're not friends. But she really only talks to me about things to do around there, or how to do stuff. We've never talked about anything else so I don't really know anything about her and vice versa. Today when she was leaving she hugged two guys that are her friends on her way out and the. She just said bye to me, so at first I thought she didn't really like me as even a friend but then I thought it might've been cuz we don't know each other. But when she came back cuz she forgot something I said see ya to her and she turned around and asked when I worked again, so I thought that was good cuz she wanted to see me again I think? I don't know if she's bi or lez but I don't really get any vibes from her that she is so how can I find out if she is? do you think she even wants to get to know me or is it all business?And how should I handle this crush? Thanks