She has a part time job at the candy counter , filling in for Maddie during her absence .
Nia Moseby ( played by Giovonnie Samuels ) - Nia is Mr. Moseby 's sixteen - year - old niece .
Nia Moseby has a part time job at the candy counter , filling in for Maddie during Nia Moseby 's absence .
Nia Moseby ( played by Giovonnie Samuels ) - Nia is Mr. Moseby 's sixteen - year - old niece .