Image imported from derpibooru 
Original Description:
 
After Shatter used the potion from the diaper to shrink Paddy down and probably regress, Paddy looses her horn and wings, becoming an Earth Pony. But her mind turns to mush to match with her foal size. The horn and wings were given to Zecora, while Shatter had ownership. Now, Shatter is picking out an outfit for Paddy while Zecora enters the room right after her transformation to see what’s going on. Paddy will be well taken care of by both mommies, and they were babbed by Paddy prior so they get to do it now.
 
Paddy is probably just shrunk, it’s up to you to decide.