After the second wizarding war, Ginny has few options but to become a housemaid to a pureblood earl, armed with nothing but her Cleansweep and a very small owl. Harry is a hero and the earl of Grimmauld, and now he's falling for Ginny. To make matters worse, he's already engaged, and Ginny is just a servant... or so everyone believes. Hinny AU: A Countess Below Stairs