Mom and Dad Learn A Lesson from Grandma, Naiah Makes a Mistake, and Elli Becomes a Ninja

Mami CrayCray's cousin/niece Mercedes comes to stay with the family, and she's a little rough around the edges. Naiah and Elli thinks she's so cool and go to her for advice. Elli gets picked on at the playground and Naiah is dealing with a bad grade. Is Mercedes a bad influence, or just misunderstood?