The mystery poop

When Hannah woke up this morning, she pointed to something in her crib and said "poo poo." So I bent down to inspect what she was talking about, and sure enough, it was poop. I thought she had just pooped overnight and it had come out of her diaper. I was wrong. There was poop on Hannah, in her sheets, and some of her stuffed animals......but none in her diaper? Makes me wonder, just where did that poop come from?