I know that I'm going to get flamed, but in situations like that it
is best to let nature take its course. A kitten two days in ICU?! Heck,
pets get better treatment than humans in this country.

1 Is she walking into walls or being over clumsy for a kitten

2 Is she an outside kitty if not Do you have any house plants or  household
cleaners out in the open or easy access             to remember they are
like children maybe in the garage like radiator fluid

3  Is her bathroom habits normal

I had a stray that ate angel trumpet plant and it was ICU for a week
,tremors  so bad that the every one in the vet's office  was in tears
including the vet

The nit picking and water bowl  sounds like the experience really knock her
for a loop  think as it as a hospital stay for us after a major operation.
I have a cat when it drinks gets his chest totally wet and usually ends up
getting his nose under water
My rumble who is epliptic now thank the gods under control still get itches
but that is another story when he got his tr4emors and seizures would knock
him off his feet for days  he would not come down off the cable box to eat
unless I shoved his nose in it