Closed environments are never good.
If you plan to pursue PUA, I would suggest against it. But you could befriend her and hook up with her hot friends....
I learned the hard way but it was at my favorite hang out. I actually had to control when I went there. Noy because she was scorned or anything, but I could never really hook her the way I wanted. I was always around and it worked to my disadvantage. It was hard to create that longing for my attention....
Good news though, she called me earlier today and told me that she got fired...
I told here that was good and to think of the positives.. My positive was just what I said above.
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Recommended reading list.
Double Your Dating by DD
(This will work on your inner game)
http://www.freewebs.com/xfman/
(This will work on your outer game)