Looks like you should take one for the team again. I would certainly do it if I were in your shoes. She looks too hot to pass up. My suggestion is that you give her a call first and see whether she is willing to take a few minutes to talk to you about issues like whether she does incall or outcall, whether she does multi-hour rates and what are her fees.
My killer for ripoffs and upsellers is asking them whether I can set up and appointment with them several days into the future, if she wants to end the conversation then, I suggest that you end it first and move on. If she is ok with setting up an appointment for a future date during her visit, then she is highly likely legit. The future date trick also wards off other undesirables.
If she is willing to chat for a few minutes and she is ok with the future date question, state that you have changed you mind - then ask her whether you can see her when you had planned to.
I would start a session with a beauty like her off with a some quality, shared wine, maybe some good fruit or sweets and start the fun part of the session with clothed foreplay for 20 to 30 minutes. You may want to take a risk and book her for a couple of hours, assuming she passes the screen that I suggested.
If she looks good on paper but turns out bad in reality, then PM me and we can exchange a feel PMs about how to make thing right.