Death is a part of life, and though it's hard to accept, it comes to us all. My father's mind also went before his body while my mother was sharp and witty right to the last.
My truth is that we all die alone, even if we are surrounded by family. It's a thing only I can do.
It was much the same for mine, as my mother died from cancer almost 20 years back, so didn't have the time to degrade mentally.
Probably why so many fear death.