Ashamed for her children and afraid of what their father would think She rushed inside and grabbed a towel. She approached the mare that used to be her daughter and began to wipe away the copius amount of semen oozing from her still winking vagina. There had to be litres of it, it wasn't stopping.
As she cleaned the mare the cum stuck to her hands, sticky and reeking of male lust. But she had made a mistake, the spell Kat had wrought was poorly made and still unstable, slowly her body began to absorb traces of the spell through her skin where it was in contact with Dan's cum.
She was beginning to feel light headed and weak, but having finished for the most part with cleaning Kat, she moved on to cleaning Dan's still half errect cock. The stallion clearly enjoyed the atttention and soon his equine member was back at full mast. She knew she should be concerned by this, but was no longer thinking clearly.
Suddenly she lost all strength and collapsed to her knees, her sons horse cock right in front of her, as she went to remove her hand she found she could not, it had melded with it. Before she could even scream she was overcome by a burning sensation throughout her entire body and she began to be pulled towards the cock.
She was lifted into the air, the cock now stuck along the length of her body, her attached arm off to one side. A sudden pulsing began in both woman and cock as the merging accelerated. Her arms melted into her sides and up into the cock.
Dan's penis rapidly grew as it became one with his former mother. His stallion mind found the sensation incredible and he neighed in pleasure. Her legs too having been absorbed his mother was now just a head on the end of his cock with her breasts hanging below.
The breasts became wrinckled and merged with the stallions existing sack, increasing it's size by several times. As she drew the strength for a weak moan her hair fell out and her head bloated into the flared glans of a horse cock. Now unable to see, her mind slowly faded to nothing but cock.
The magic present within her body, no longer contained within the witch mother's mind boiled to the surface, mannifesting itself physcially as semen, expanding the stallions already huge balls to gargantuan size. Overcome by the need for release the stallion that was once Dan began to run down the street deperate to find release. But where could he find it?