I'm so sorry for your MIL and you going through this situation. At least you will be able to comfort your MIL. What age is your son? Because with kids, I think sometimes if the latest memories they have are of a grandparent still able to talk or interact, not with tubes and such all around, the earlier stages of a dying relative are easier on them. Depends on the age & the child's personality too. I don't know. In my case though, I had 3 living great-grandparents when I was born, 2 of them being my maternal grandmother's parents and 1 on my dad's side. When I was in 3rd grade, all 3 of them died of natural causes in the course of that school year. Going to so many visitations and funerals really freaked me out, but then again, I was also a very anxious child. It depends on the age and what you feel a child can handle. Because if my mom had thought about it, 3 funerals of relatives I personally knew in one school was too much for me, especially as I knew my maternal great-grandparents (the married ones) well. They lived next door to my maternal grandmother, who was their daughter, practically a 2nd mom to me, I was at her house so much. My middle sister (she was in 2nd grade, only 16 months younger) and I played and ran between the 2 houses all the time. And my paternal grandmother took us to visit her mom in the nursing home from time to time. But anyway, all that death was way too much for me. I have never asked my sister how it affected her, but if I remember to, I should.