Grief can often be accompanied by guilt, usually at things left unsaid or undone. How do your grieving characters cope with that? Do they emerge from the grief better, stronger characters, perhaps better at showing their emotions openly than they had been before? Are they determined to show how much they love the family/friends they have left?
How does your created world handle grief? Does it encourage open emotions or are people expected to keep it to themselves? Are there people the rest of society are expected to mourn at the appropriate time, whether the majority want to do so or not? What is the punishment for those who won't conform to society's ideas here?