In the wild a ball python will spend its days curled up in a rodent burrow or termite mound. They only come out to hunt at night. These snakes have pretty slow metabolisms and tend not to move around much, and since they are nocturnal most of your snakes movement probably happens when you are asleep.
Make sure that as you talk with your mother you are staying calm and respectful. Try not to raise your voice and hear her out as well. Don't make this into an emotional/anger fueled decision for her. The calmer you stay the better your chances.