I think you're right to think twice about it. But, it's a mucky business all this punting, and if you delve far enough into the feedback of WG's and punters they have seen, you will always find summat to be a bit wary of.
Ask yourself a question: if she had seen a punter who had been with a barebacker a year ago, rather than recently, would you care (as much)? Probably not.
Plus, you don't know whether the punter in question bb'd the previous prossie. Too many variables...just book her, fuck her and feed back
She looks like a bit of MILFy fun!