Six days had passed since Petra worked as a maid in the Mathers' Domain. Frederica recalled the time that Petra wanted to apply to work as a maid. She warns her that working as the mansion's maid takes a lot of hardships and dedication and it isn't easy to do. Despite her warnings, Petra is still obligated to work as a maid. And so, Frederica accepts her. (thetvdb.com)