If you train your slave properly, you can expect to see this kind of pride on it's face after an intense session of abuse because it's position in life is so thoroughly reinforced that it finds it's purpose in serving and accepting daily punishment.
Just moved into my new apartment in Crowntown, and to celibate I'm spending the entire evening breaking in the throat of my new fuckdoll. How's your Monday night going? (AnaKatana)