You can not write a review of a session that never happened.

However, you can blab about it on your local board and name her.   Do that.

If I've read your post correctly, you already wrote a positive review and planned to update it after a second session.  That session seems not to have happened.  TER rules say you can't write a review for a session that never happened, so the girl is right in this case.  If you submit it she can now use your own post to prove no second session took place.  IOW, you've screwed yourself because you do not understand TER rules.
And just FYI, while you can write a second review for a session that DID happen, you will get no additional VIP days for it.

That's what you should be posting on your regional board.

 
Also, even if the appointment had happened, you have to wait 90 days before  re-reviewing the same provider. Sorry, but the rules are the rules, I am sorry to hear you got screwed in the bad way, but you can (and should) name her on your regional board. Assuming you are telling the truth (and I have no reason to believe otherwise) you could impact her business enough that she might offer to "settle" with you, or if nothing else you will be doing your community a solid.

Never advance money to a provider. With her hourly rates, she shouldn't have cash flow problems. And since the only thing that a provider really wants from meeting with a customer is the money, your advance has just removed the primary incentive for her to show up. Sure, a smart provider might value repeat business with a generous and kind customer, but the ones with cash flow problems generally aren't smart.

For what it's worth, I learned this lesson the hard way about 20 years ago, when I first got into this hobby.

Thanks for input. In giving provider the benefit of doubt, I have reached out to amicably discuss what happened and wait for reply.  I know there could be circumstances that I may be unaware of. In heat of moment we both may have overreacted. Just as I would out for being a ripoff, I would admit if I wrongly accused. In this case I hope I am wrong.

Provider spent every penny on a drug binge for weeks. What a dissapointment. Hope she gets the help she needs.

You are a walking ATM. Are YOU JRDOWNUNDER69-ADVANCEPLUS? Are YOU a lender? You got exactly what you asked for. Ladies I see would never asask for an advance unless I was rebooking for a touring lady. And if she had to cancel she would refund the money. Who are you hanging out with?