It was yummy. As soon as Kelli reads her story aloud we can see she understands many elements of how stories are put together. She knows, too, that they are about characters who take some kind of action that results in a consequence. Kelli's little boy and girl went apple picking so they could make the applesauce they enjoyed eating. This is a simple story but a complete one.
Children begin to write the way they speak.
It's logical to Kelli that her letters run across the page without spaces between them because spoken language is a steady stream of sound. Listen to someone speaking a language unfamiliar to you and you hear sounds flowing together, not individual words. This is the way children hear language. Learning to break it up into its component parts is a complicated skill learned gradually. Invented spelling reveals what children hear.