She's been on my radar for a while, looks right up my strasse. But why the negative review? Sounds like a great meet.
But it sounds like the OP received a good service, so despite the question marks from him about the legitimacy of the SP's gender is this a negative?
He's worried he's been huckstered and deceived into shagging a male.
Gender is linguistic tattle. There are only two human sexes; it's not possible to change the one we are born to, and there are no interstitial stages - merely abnormalities and disorders, or people intentionally camouflaging their sex for various reasons.
If it's the latter, that's an abuse of sorts, and a legitimate cause for complaint, regardless of whether the person had been nice in other respects.
I'd too would have enough concerns with this one that it may well be a man.