Crazy College Day Game Experience (found out we work together)

So today I was at library and this very attractive girl sat down near me and I opened her about how organized her stuff was and she was very receptive and bubbly with me. I then had to go on another floor of the library and said to her that I would be right back and that she better not leave. I returned 15 minutes later and sat down at the same desk and continued to talk to her while we were both studying. Somehow the names of the restauraunts in our college town and found out that we both worked at same restauraunt but didn't recognize her because I only have worked there for a day and she didn't work that day. She acted a little awkward when she found out we worked together but I guess that could be natural. During the whole conversation she seemed very interested talking to me...

I shouldn't have asked for her number than because it could have lowered my value and was slightly unnecessary since I would obviously be seeing her again but I did and she said "maybe if you knew my namem, i don't even know you" oops forgot to ask and when I asked for it she said "too late now". I can't remember the last time I got rejected for a phone number and it was extremely awkward and my awkward tolerance is high. So is there anyway for me to recover from this at work, should I just act like water off a duck's back or what? We are working together lol.