nanado, I feel for you. I try to imagine what it would be like to have been in your situation and I can't. You are such a brave gran.
On New Year's Eve 1974, I was all alone in the old nurses' home which served as parents' accommodation at Birmingham Children's Hospital where my DS2, not quite 2 years old, had been admitted that day to be prepared for a major operation on his bowel. It was a cold and bleak place and suffused with parental anxiety, pain and grief. I was one of the lucky parents whose child did get better - he will be forty in two weeks' time and is a great dad himself - but there were all too many others faced with loss or the prospect of loss.
The worst New Year was January 1st 1986 when my then OH told me he'd found someone else. Devastated doesn't begin to describe my feelings. Rejection is one of the worst human experiences short of bereavement. In the long run it made me more independent and resourceful; more empathic and, I hope, prepared me to be a good granny.
You can see why I look forward to the New Year with some trepidation.