Which, Witch and Whichis

Nathan is a student at Moore Elementary in Arlington, Texas: I think you do good books. But I'm a crischin and my mom says that whichis are on YOU KNOW HOW's side. How lives down there. Is Strega Nona a which. Because I don't know why I am asking this. Why does Strega Nona need help if she is a strega.

Tomie: Strega Nona is a kind, gentle, loving and good grandma witch. She's a character I imagined. She isn't a real person.

Collin: I notice your books have a problem and a solution.

Tomie: You "notice" well.