You are right, two people in one room does NOT sound like an assisted living facility to me either. Maybe there are brochures. If it is really an assisted living facility (or something else) there should be one.
You are way too young and active to be in a nursing home, and need your own space and privacy.
You need to REALLY press her for more information and transparency.

I would not like the idea of having to share common areas with other people and splitting up chores either. You never know who you will get for a roommate(s).

But I highly doubt that there would be shared cooking, and I think you could label your food, so you would not worry about that living situation altering your diet and effecting your kidney function tho (((HUGS)))

I'm so sorry that she dumped this on you on a Friday. I would be thinking about this whole thing and my anxiety would be sky high all weekend, too