the mysterious case of the dish fairy

This morning as B is getting ready to leave for work, and I was fixing breakfast for Ash.

Me: I need to empty the dishwasher.
B: It still needs to be emptied? It didn't happen overnight?
Me: No. Apparently the Dish Fairy did not come to our house and empty the dishwasher.
Ash: There's a Dish Fairy?
Me: If there is, she didn't come to our house last night.
Ash: You know, Mommy, I was going to empty the dishwasher for you and put away all the dishes, but now that I know there's a Dish Fairy, I don't have to.