My stress levels were down when I called the secretary a couple of days before to postpone it. I was taken by surprise, yes, rather shocked, when she offered me an appointment at the same time of the day for the very next day, even sooner than my original appointment. And, yes, my husband would be available to stay home with my father.
"How do you have an hour free? Usually, it takes a few weeks for such a long treatment."
"Just two minutes before you called, we got a cancellation call, and I was just going through the lists trying to figure out whom to call and offer the slot."
"How often does something like this happen?"
"Not often, certainly not such a perfect match."
"Well, I guess G-d planned it, so I have no choice other than to accept it."
Of course it wasn't as awful as I had feared, just more expensive. And I got all the errands done in Jerusalem, etc.