Usually you don't really need to say so much as just listen; follow her lead with small comments, but mostly just be there to listen. There aren't a lot of good listeners these days and other folks will be saying stuff to cover their own discomfort when confronted with such sorrow and reminder of their own mortality. It's a way of sharing the grief, mind you don't take it on yourself, though. It's good to use a shield of "light" surrounding you when you go into such a situation, esp. round your heart.

kat