|music||:||Luciano Pavarotti - Recondita Armonia|
Geriatric hallucinations are quite common, especially when there's a chronic illness present or trauma (it doesn't have to be big, it could be as minor as some sort of medical procedure). Grandma is diabetic, she has been for quite a long time now. It's controlled by medication and has only been a problem once in a while, but it's still there.
Hallucinations are even more common if the patient is depressed or life has been full of stress that hasn't been dealt with. I almost positive Grandma also suffers from clinical depression to some degree.
The glucose levels going up and down, the medication, all that added to the strains of her life, past and present, are probably taking its toll.
I hope she makes it past the Lunar New Year.