Sounds like....

Me: "Amberlyn go practice the piano."

Amberlyn: "Mom, I need to do my fairy."

Me: "...Amberlyn, you need to practice piano, you have lessons tomorrow."

Amberlyn: "No mom, I need to do my fairy!"

Me: "Your what? Just go practice!"

Amberlyn: "Sister Moak said I have to do my fairy!"

Me: "What's your fairy?"

Amberlyn: "You know, with writing the notes and stuff..."

Me: "... Your theory?"

Amberlyn: "Oh, ya. I need to do my theory."