Where is God?

Katie and I were have a discussion about God the other day. She asked where God lived. I told her that He lived most of the time in heaven but He is so special that He can be anywhere He wants at the same time. She said, "Molly has God in her heart. " I said, "she sure does." Then Katie replied, "God isn't in my heart." I asked where He was? She said, "Mommy he is just above my belly button.