Each time the twins get scolded for a biting they look guilty. They don't understand the words themselves yet but they know the door. Dagger was right with that fact that they cut their fangs first. These would be  permanent while they lose the rest of their teeth like other children. Something seems familiar to Stella about Dagger's speech patterns. She had an uncle from the southern United States when she was younger. "Why is it you sound like you're from the south," she asks him one days as they play with the twins.