If I told you no, would you go?
Transgendered or not, if you find an escort with masculine qualities and that's off putting to you, find someone else who actually does it better for you.
She looks trans to me but if you've already decided that, go with your gut instinct instead of worrying later on if you actually "nailed a man" after you've been and gone lol. Unless of course it's your intention to try a post op?
For the price she's charging, there's better and established reliable providers out there anyway...