What was Jo's new "reality phase" in the story, wizard hits mommy?

Jo's reality phase was the period when she started cross-questioning her father while telling a story. As she started growing up, she wanted to know the reality of things. She asked whether magic spells are real or not. On being told that spiders eat bugs, she wanted to confirm if they really do. When Clare told her that God was in the sky, she turned to her father to ask whether God actually lives in the sky.