When Can He Breathe

Today, Mistress Sabrins is going to control her slaves breathing. She closes his mouth and nose so that he has no chance at all to get any air. She alone will determine when he is permitted oxygen. Until then, she presses both palms over his face to stop him from breathing. She loves to see him despairingly struggle for air and her hands remain firmly over his mouth and nose. You can see the despair in his eyes. When will Mistress Sabring let him breathe?!