Looks like the professor who sent you to the hospital was right about your needing more care. I'm glad they caught the kidney infection!
I was in the hospital for a coma in September. Nursing care wasn't great (like when they removed my urinary catheter, and then let me lay in my own urine for 12 hours), but at least they kept me alive, and got my sugar down. Even if not very efficiently -- they assumed I was a Type 2 and didn't need insulin if my BG was good, totally ignoring that if I was going to eat, I needed insulin to cover the meal. Plus my dawn phenomenon.
Then they sent me to a convalescent home, because my BGs weren't down sufficiently, and there, they had an antiquated sliding scale and I had to fight to get sufficient testing and correction to actually lower my BGs. I was there for 3 miserable weeks.
The problem, I think, is that their protocols demand that one size fits all, and that is patently untrue. It's best to have an advocate who knows YOUR diabetes, and can fight for you when you are too out of it to do it, as I was for the first day and a half I was there. Even after that, I was pretty fuzzy -- when your metabolism is screwed up, your brain is, too.
I sure hope neither you nor I have any more dealings with hospitals!