Days or weeks?

Mum went into hospice 2 days ago. The day she arrived, she had some changes. It was the first day she was no longer able to walk. However, she also was more alert and chatty than previous few days. She also ate half her dinner whereas she didn't eat anything the previous 36 hours. She has been increasingly restless and agitated the last few nights, but this seems to only happen at night time? She is confused, having trouble finding words and delirious at times. She's sleepy but still awake for a few hours at a time.