Nengneng -- Nope, I never found out what the story was.
Actually, I was moving away from the area that week and so I had been busy packing and wrapping up loose ends. I had decided that my visit to this club would be the last fun thing I did before I left. I didn't go though, since the club is a bit of a drive and I didn't want to drive out there if it was going to be awkward.
I have two guesses about why she ignored my calls -- She's an extras girl, and so she might have gotten paranoid about me calling her out of the blue one day and trying to arrange a meeting, even if it was just for lunch. I had decided to save my money and focus solely on work, so I had not seen this girl for several months at the time I called.
My other thought is that I may have seemed indecisive -- I didn't know any restaurants in the area and so I asked her if she knew a good place to eat. Women really despise indecisiveness in a man and so maybe this drove her off.
That was almost a year ago now. However, I might be in the area again in a few months and I will stop by the club and maybe try calling her again. I have nothing to lose from trying.