Hi Dude,
Sometimes things come up on both ends and it does not work out. I have had the same problem where I structure my day around the appointment and it does not go through. I understand your frustation as it is not easy to come up with the time off from work, family or both. I mostly chalk it up to the hobby and blow it off. At least she did not blow you off completely and informed you what happened. I have to say I have had things come up and had to cancel or re-scehdule with the ladies too. Most ladies are fine with it as long as you give them enough notice and offer to make it up to them

I understand their frustration too in that they are out the time they could have seen someone else plus the money on an incall, baby sitter( if needed) and gas.
I am glad this has only happened once to you but it is pretty common in my experience and I would not mention it in a review if it were me. I hope you get to see the young lady some other time.