Absolutely fantastic!
The tweening was encredable, and you even managed to keep Comets sense of style!
The only real advice I can offer, is this needs audio.
It would be far more enjoyable to hear her moan, whimper, and yelp from time to time.
Also, perhapse this should have been a game, so that we could take our own sweet time with it?
Your a god amongst gods, and the furfags of the world thank you for this beautiful piece of art!
<3