There is an emergency vet an hour away that doesn't let owners be in with pets (this was their rule before the pandemic). I never knew how they were treating my pets and almost every one I brought to them ended up dying later. They killed my friend's dog by giving him the wrong meds. My local vet does not trust/like the emergency vet bc of their reputation. I do know that the people at my local vet will treat the pets well. They love animals and are gentle. My orange cat loves people and was trying to cuddle with the vet tech on his last visit. But, I can understand when you've seen the staff be unkind to animals why you would watch them like a hawk.
I hope Becky's sister will be OK. IIRC, I read something about a study being done where they found animals that are kept in shelters or kennels at vet's offices do much better if someone goes and pets/comforts them and gives them some affection. Whenever my pets had to be left over a weekend, I always made sure to visit them during opening hours bc when I didn't, my pets didn't make it. My vet has drastically improved the holding areas for pets though. Used to be cats & dogs were in same room, large dogs were outside in kennels, and rooms were loud and not so comfy. Now they have separate room for cats sealed up so cats won't smell or hear the dogs. Dogs are all inside in a large area. Ambient noise is not unpleasant to them and the temperature is regulated to keep them comfortable.
Sending good vibes your way & hoping things will go well for your doggy.