After just an hour of Kat (Kathy or Katherine) sitting on her bed in her bedroom did her whole head conform to the furred contours of it becoming the skull bone head of a donkey. If not from this that she felt a lowly state engulfing her, but then did her devil familiar arrive.
"How typical of a young and naive witch to make an ass of her body, and Dan helped, mating with you before your becoming of a magical age for meeting the coven and gain then your witchery status!
If you wish to become as lustily more sensuous, a different color of your body fur, and without your mother knowing this, I could make your womb as sterile. Sterility allows you to enjoy sex but without any discomfort from becoming pregnant; bearing foals is both painful for you and a messy situation.
I can deem your body to produce milk, bloating your udder and teats, as you might coax a colt human or some fool male human to suckling your teats and doom the man to be as if your foal. Have me to do this for a doomed witch, and know that your sexual inclinations shall exceed that of a born jennet donkey. In essence, you shall become as if a human woman nymphomaniac, and wanting, needing to feel a cock shafted down as inside your black, hot, equine cunt. Bestial desire and a spited animal sense of lust will chide your sexual self for enjoyment of big meaty cocks, even draft horse cocks!
Decide soon, like now, before the infectious curse enters its next stage, and your womb sees equine changes, then you shall accept the style of doom your dumb ass brother wished to inflict on his horny sister." So said a red devil, horned devil-familiar, he seeing his chance with a deflowered half animal woman. The devil knelt and placed his mouth snug to the darkening nether lips of Kats' sex. He cast an evil glance up at Kat, seeing her nod as accept what he planned to do, she knowing his foot long tongue would enthrall her sex to help her decide.
As the devil's tongue did enter Kat, her pelt of donkey fur sprouted, grew, and began to engulf her from neck to her hoofs.