This makes me so sad. Anyone from that industry knew it would happen, but the fear had been pumped up so much that the public were screaming for the mandates to happen - it never occurred to them that it would result in bedblocking and neglect, despite numerous warnings from anyone in the know.
I hope your Nanna is ok and is getting regular visits from the staff that are left - any decent care home would be making sure that's happening. It's not ideal, but just 10 mins every hour or so will really help her and the other residents.
Keep us posted on how she is