I don't think that's strange - picturing her walking like she doesn't want to wake a sleeping bear made me smile. Kids see things in such a different way sometimes - everything is new to them so they don't take things for granted like we do. My kids yell whenever they are in an open space like between the double doors at the entrance to a store. Why? They love to hear their echo. It's become automatic to them. I love to watch their brains work!