Respect to OP for his decision. I'm not saying it shouldn't be a negative as he did have his time wasted, but good on you for giving her some leeway.
While the assumptions by others could well be correct, it's also possible that she had a reasonable excuse. I was with a girl once who had been hammered so hard by her previous client that she was really uncomfortable (in pain). We stopped straight away and she gave me a BJ which was fine. In that scenario, she'd have had to cancel any other bookings that day, so there are things that could happen that would result in the above situation. As a woman, she could also be feeling emotional, or not in the mood, and perhaps wasn't able to perform to her best so decided to take the rest of the day off rather than providing a poor service, etc.
Anyway, just saying I think it's a tough job and, for me, how she handles it would be a big factor.