Ask her out for drinks. Or if your doing something like I don't know, going bowling or something just say "hey I fancy going bowling but it's last minute everyone's probably busy, fancy tagging along?".

Let her enter your world. Then you can also have a good chat without the co-workers eavesdropping, as I think that might be a reason why you are backing out of talking to her in the workplace.



Also dude, these no need to woo her. As I said above, just let her enter your world, into your reality. Look at what she can offer you, don't think about what you can offer her. Think FUN.