It still comes out of nowhere

I just received an email that made me bow my head and begin to cry...I didn't expect to still react like that so quickly over a year later.  My grandmother has made a little Christmas planter and wanted to set it at Dad's grave site.  I can accept the fact that my Dad is gone and I'm at peace with it.  Of course I still miss him and of course it hurts sometimes, but I am very aware of the greater picture of life.  But Grandma's email made the tears flow again, and it's less about my dad than about her son.  No one should EVER have to bury their child.  While I know that my grandmother is also able to appreciate that Dad is no longer suffering, it doesn't change the fact that she outlived her son.  As a mother myself, that reality is heartbreaking.  It also made me think about the fact that Dad doesn't have a grave marker yet.  He is buried next to what will be my mother's spot, which is next to her parents.  Grandma also owns four plots "above" those four, so the stones are already in place.  However, Mom wanted some particular etching done on the stone, and because she got sick as the weather got warmer, it hasn't happened yet.  Regardless of any of that, I am sometimes still amazed by how quickly emotions can overcome.