My Mom has stopped eating for the past (3) months, has lost over 55 lbs. Any advice?

If she still drinks then give her ensure plus ,which is a meal itself but in liquid form and is full of vitamins , comes in all lovely flavours.
I also give her cargeen moss , seawood full of iron , simmer in milk , makes a lovely warm drink..you can add honey , syrup , mashed up conference pears, very good for keeping up bowel movements. Good luck

What does her doctor say? Losing that much weight in a short time is a signal a doctor should look at. Have they mentioned Hospice?

My mom stopped eating near the end of her stay in a nursing home and it was not long after that she died from a stroke.

What does the doctor and the nurse at the nursing home say about this? Can you bring Hospice into this situation?