Must be a bummer to die at 99, one year off your centenary..
My grandmother is less than three months away from her hundreth. Still hanging on though and in good spirits, but she feels that she's lived too long, and wouldn't care if she didn't hit the milestone. She feels that living belongs to the young.
Kly,
Is there going to be a birthday bash (well, of sorts)

for her? That IS quite a milestone. Best wishes to her. How is her general health?
It's hard to know how you would feel when you get to a 100 yrs old. NOW, I tend to think well if I'm still feeling good and in decent health, why not want to live longer. Then again, maybe you just get to a point when you're ready.

All that being said, cherish every moment with her.
TIS