This year, she would have been 90. 86 was a good run, and if it weren't for the pancreatic cancer, who knows how much time there would have been.
I miss my mother even though there were times she drove me up one wall and then another. But I never understood what being alone in the world was really like until after she died.
If your mother is still living, and even if she drives you absolutely bonkers, love her for everything you can.
When they are gone, they are gone forever.