I'm glad to hear you enjoyed A Petal Among Thorns! The picture of Petal in a puppy outfit isn't a scene in the story. It's a custom render I did for my patrons on Patreon and SubscribeStar. I do a lot of custom renders on those platforms for The Bunny tier and above.
Be sure to check out the sequel A Moment of Bliss. It's got a lot more characters and a much more interesting plot. Thanks for playing!