How to make Grandma cry

Grandma and PaPa stopped by the other night to see Olivia before they went to work in Davis. Olivia has a baby doll that she absolutely loves and carries with her everywhere. She feeds it a bottle, kisses it, pats it, plays with it and puts it to sleep. Well when grandma was here she was sitting in grandma's lap holding her baby and patting her. Grandma sang "rock-a-bye baby" to Olivia and her baby. When she got done Olivia proceeded to sing a song very lightly and gently which sounded much like the song grandma just sang to her own baby!!! It put grandma in tears!! It was just too precious. Those are the moment when you wish you had a video camera.