Sorry to hear that. I have one grandmother who is a death waiting to happen. She's very old and not only as far as her age goes, she looks old, walks like she's old, you can tell her body is tired. She'll probably die in the next two years, and I'm dreading it cause I used to be at her house all the time when I was a kid. I'll probably cry a lot which I haven't done for other grandparents' deaths so far. My other grandma is gonna live at least another decade.
On a side note, your thread made me think about the time when I thought about what it would be like the day you're officially parent-less. That's gonna really suck.
Edit: Again, sorry to hear about your loss, I sidetracked a little.