need some advice

I have been a TER member for years and rely on it a lot when seeing new providers. I think it is a great service. I was recently in town and had booked a new provider with a long history of great reviews. Several confirmation emails...I was verified etc...no problems. The day of our date I called to confirm and she had an "issue" and had to postpone for several hours...it was my last day in Vegas and I really wanted to see her so I rearrange my entire day...she confirmed later by phone and we had a date all set...6 hours later than our original date. That was the last I heard. Numerous texts and phone calls were left unanswered. Needless to say, it was a lousy way to end the trip. I had little time to find a replacement and missed out on other events with friends etc and waited around feeling like an idiot. I first was concerned that something bad happened to her because she had been so prompt with confirmation emails etc and sent her a long email asking for an explanation..no reply. That was 2 weeks ago. My question is this...do I post a bad review? I have never posted anything negative before but at the same time, I rely, like others, on reviews and we have all had our share of bad experiences and "flakes" in the biz that are unprofessional when it comes to stuff like this. They are far outnumbered by the classy ladies out there but I don't want anyone else to have this experience...so guys and gals out there...a little advice? Thanks!