Severus had furiously threatened the Dursleys when they came to on the day they first met. He made them promise to treat Harry better and to give him a proper room upstairs. That meant no more chores, no more beatings or verbal mistreatment, and no more starvation. Because Severus would know. He seemed to know everything from that very moment on. They were forbidden from ever telling anyone of Severus’ visits to the house, which he had ensured by enacting a promise from Petunia’s lips.