Big-Lipped Alligator Moment: The scene where Katherine shapeshifts into a dinosaur is never foreshadowed, said power is never seen or discussed again, and it adds nothing to the plot, as the kid she's trying to convince still doesn't believe she's real.
What Do You Mean, It's for Kids?: The main plot of this family-oriented movie is a dentist trying to avoid going to Hell, and Rogers' attempts to send her there once she starts breaking the tooth fairy rules.