Write a story, with a focus on dialogue and the woman's inner state, about a woman who is taken prisoner by a Rottweiler dog, that sexually dominates her. Don't rush the story, include descriptions and dialogue and let the excitement build. She cannot feel any sexual pleasure and cannot ever get used to this. But to try to keep the dog from hurting her, she acts like she loves it and pretends to take sexual pleasure in the way it ruthlessly fucks her. When it fucks her, it knots with her when it cums, and she is stuck with the cock inside for a while, sobbing while pretending to have had an orgasm. She knows she will never feel pleasure again. The woman must be very vocal during sex, describing how much she loves every act, begging him to be rougher and harder, even though she hates it. If she doesn't encourage him, he will kill her. But when she encourages him, he gets rougher. The Rottweiler never talks and does not have hands. It slobbers and stinks. 