My heart broke for him. I lost my first grandparent around the same age he was but in my case my grandmother had been sick for awhile so it wasn't unexpected. In the case of my wife's mom it was a total shock. It is actually somewhat fortunate that it occurred while we were in Texas visiting and were able to extend our stay and help my wife's dad out. 

grayruby

Dogs_And_Cats

Dealing with Dog Loss with a Little Kid

Undisciplined

That's the hope.

I'm sorry your son had to deal with his grandma's loss at that age. I was a few years younger when my grandpa died and honestly it barely registered. Then I was an adult when my other grandpa died, so I was able to handle it.

We're very fortunate in still having all four grandparents in the picture, but their ages and health are such that we know we might have to start dealing with that type of loss in the not super distant future.