She was with the 100proof agency in Vegas, one of the two reputible agencies there...(Seriously the  number is 2..the rest are total scams) for quite a while.
Must have decidied she needed a break from sin city. Her rate there was $400 which is pretty normal for Vegas. I would jump on it (couldnt resist the pun) if she is your style.
Note, the agency is a mystery to me though. They have acquired the services of a number of girls recently with strong resumes. Anyone know anything? They seem to be operating in Philly.