Every afternoon, Nana comes to get me from school. We walk, and talk, and look at the squirrels, the robins, and especially the caterpillars. They feel funny when they crawl on your hands. Then one day, the caterpillars were gone. Where did they go? Where did all these cotton candy cocoons come from? Then one day Nana didn't come to pick me up after school. Mommy was there instead? I wonder why?