Massive Breath Reduction

Lady Amy has been tormenting her slave for almost two hours. You can see because the idiot is clearly weary. But the Mistress doesnt care. She squeezes the air from his lungs, tormenting him with a massive reduction in his capability to beathe. She has joy determining when and for how long hes allowed air. Until then she presses her hands over his mouth and nose. How hard do you think she would be on you? You would be as hopeless as this slave!