The sister is really very horny, to get her brother into bed like that, it would have to be such a hen. Although in principle the brother is also particularly pleased with such sex, because they fucked just amazing and that can not take away from them. Although I think that such a mad fuck they will have more than one time, we can only wait and see, because she 100% dreams of his thick cock.
I could see why the housekeeper kept her apron on till the last minute. If someone came in, she could have said she was cleaning the room and the owner's dick in her mouth was an accident.