Nature certainly had some strange developments at times, and amongst them would of course be the mystery as to how a caterpillar became a butterfly. It was no surprise that Varda would question the oddity, looking curiously at the crawling creature mind clearly attempting to decipher how on earth this wiggly little thing became a butterfly.
She would smile softly at her daughter, in all honesty it was a mystery she wasn't even fully sure how to explain so much of the strange transformation was done away from curious eyes. "Well first they surround themselves in a special den called a cocoon. They grow inside there and only come out again when they are ready and are butterflies." It was the best explanation she could give unfortunately but hopefully would suffice.