I believe that, in a court of her peers, she would be found guilty of grossly misleading you, willful deceit and inexcusable provider etiquite as well as just plain jerking your chain
I'm glad you will provide her name privately to those interested, me included
Cudos for not outing her but we will soon learn her identity through PM
Seems to me you should take her up on her offer to 'make it up'
If she accepts you can set terms.  
If I were you, that would be a two hour session. I would insist first hour at 50 percent and second hour gratis to assure you understand she means business.  
You are a gentleman to persist with her and not out her  
You are also prolific reviewer.  
It seems she is in a perfect position to assure there are no further misunderstandings

Seriously. Guys make the BL for less.

but you seem to be a sucker for pain.  Why did you ask to see her again after the second time she cancelled on you?  Just move on dude.

No excuse for rescheduling, even if she gave you a 75% discount. She obviously has no respect for your time and may have previously done the same to other hobbyist. You need to name her so she does not do this to other hobbyist. It should goes both ways for hobbyist and providers, this is what TER is for.

If you want to be with her very much, then be patient.

I see my regular at least a couple times a month. She canceled on our first appointment. We finally got hooked up more than a year later.

If I had given up on some of best ladies, I wouldn't have had so many great experiences. It gets easier once they get to know you.

You said she canceled the night before her appointments with you so at least it's not an hour before the appointment. And maybe she was sick twice. Since Christmas night I have been sick three times with a cold, chest congestion and a sore throat. It's that lovely time of year and this year many colds and viruses are going around.  

  And if she was on checking PMs at 11:30AM that doesn't really prove anything. She is checking emails and PMs on her phone while dealing with whatever. That's common. Smart phones = easy access.

  So it sucks yes that she had to cancel but if someone is sick they should. And things in life happen and pop up all the time. You yourself said she was reputable provider so she probaly really had to cancel. And you made the choice to keep rescheduling.  

 That is all. Happy New Year

Of their schedules. Or some take care of their kids and when the kid gets sick they have to deal with it. I know it sucks and I for one will Stick to my schedule unless I am sick or say I have a trip planned and all but one canceled. It has happened. We just never know what really is going on and when it's Pay 4 Play it doesn't guarantee anything.    

  I had one client who canceled the minute I sent him the room number. Then he canceled another time 45minsutes before our meeting. I had seen him in between those two appts and he had covered for it but he just did it again. We re confirmed morning of and then hour and a half before appointment and then he never showed.  Shame on him but also shame in me for taking the chance to see him again. I always knew there was that chance. So now I will definitely think twice before booking with him again. I think it has ran it's course.  

  So you should probably move on a well. But the provider has a great reputation so maybe try again?