Dawg, sorry your mom had to go through that. Some people just don't understand how difficult simple things like sitting for a couple of hours can be when one is very aged. I remember some less than stellar experiences that my own mother had at that age when going to the doctor. The doctor himself was fine, but once for some reason the person accompanying her took off and the doctor's receptionist, knowing that she was alone, in her mid 90's, almost blind, and very feeble due to age, sent her downstairs to wait for her cab on the busy street, by herself. She was lucky to make it back to her facility. Soon afterwards she began seeing another doctor who made regular "house calls" at her continuous care facility, so she didn't have to go anywhere. But doctors don't make house calls to patients' homes any more these days from what I understand, so I don't think you could do the same.
Today was hot again, but a couple of degrees cooler than previous days. Just a few minutes ago I heard the rain begin - - the rain that had been threatening for a couple of days. At last! I hope this will cool things down a little.