She screams out in turn from her orgasm and the feeling of her sex and womb getting pumped full of seed. Drooling and panting out hard, feeling her body getting pulled in through the cage, feeling her womb get warmer from your seed. Her eggs already getting fertilized as you finish in her and pull out. Her dripping sex and lips twitching from the mating you gave her, as the mistress congratulates you for the nice insemination. Giving you the 2000 gp for the job well done.