Corey has shared a couple of experiences that Derek has had after the death of his Papa Joe. They have brought a great deal of comfort to me.
One day Derek was on the trampoline playing with the neighbor children. He started crying when he couldn't get off. Corey came and took him off. A short time later, Corey heard Derek crying again and went to see what was the trouble. Derek was sitting on his bicycle and his dad asked him what was wrong. Derek replied, "He wanted Papa Joe to come back and be with Grandma Carol".
Another time, the three of them went to some community festival. Derek got two helium balloons and his dad told him to hang on to them or else they'd get away. He did until they had apparently arrived home. Before going in the house, Derek loosened one of the balloons - his dad lunged for it, but Derek stopped him saying, "No Daddy. That one is for Papa Joe."
He continues to ask questions and try to understand where and why isn't Papa Joe here.