"Come over, Heather!"
Excited, Heather got up to her feet, and followed Miss Angie, leaving her friend Olivia alone throbbing beneath Lib. The two walked over to Nadia, who was grazing by the pond. As they approached, the mare pony raised her head up.
"That's a good girl," said Angie, petting the chestnut Welsh pony's neck. "So, thanks to your friend Olivia, we've give Lib some very excited private parts. Now it's time to do the same for Nadia!"
"You mean...I'm going to be her...her..."
"Her nice, sexy, pony vagina," said Miss Angie, grinning.
"But how am I going to become Nadia's, um....thingy?", asked Heather. She sounded more intrigued than anxious. All the more perfect for the next changes, Angie thought.
"Quite simple really," said Miss Angie. "Nadia, down."
With that simple order, the mare obeyed, and set herself down on the grass with legs folded. Not far behind, Lib was trotting over with his little girl-headed cock in tow. Olivia was quite eager to see her friend's turn to change.
"And here's Nadia's magic pony hole!" quipped Angie, as she gently held up Nadia's tail for Heather to look. "The one below, of course."
Below the pony's thick pucker was a large, wrinkly and dark-colored slit, with a slight musky smell and bumps on its leathery surface. Despite having seen her friend's fusion with Lib, little Heather couldn't help but wonder: how in the world was she going to turn into that???
"First thing's first. Heather, sit down right there. That's right! Right in front of her butt."
Heather obeyed. Walking over to Nadia's rear, the little girl sat her nude butt onto the ground; the grass tickled and poked at her bare buttcheeks. She faced Nadia's fat pony pussy, which was close enough to Heather's face that she could reach out a hand to touch it.
"Perfect! Now, put both your feet on Nadia's vagina."
Again Heather complied, placing the soles of her bare feet onto Nadia's marehood. Miss Angie smiled. Behind the witch's back, she snapped her fingers.
Instantly, Heather found her feet suddenly sucking into the pony's large slit, as if they were being sucked into vacuum cleaner. Heather squealed with surprise, as Nadia snorted loudly beneath her. The ponyhole was pulling the girl's feet and ankles in, like a hungry mouth.
"Miss Angie!!!", cried Heather. The witch just giggled, seeing Heather's feet vanish into Nadia's marehood. Soon, Heather's heels, calves and thighs followed suit, sinking into the wrinkly lips, until Heather's legs were completely gone.
"Whoa, Nadia's vagina is eating you!" exclaimed Olivia, who stayed bobbing erect not far away. Both she and Lib watched with great interest.
Heather could still feel her legs, though, as the insides of Nadia's womb squeezed around her. Again, Miss Angie twirled her fingers, and the girl suddenly found her body rotating on its own; all while she was half-stuck within Nadia's vagina, and slipped deeper inside like a turning screw.
"Ooooh," Heather moaned, as her own vagina brushed against Nadia's insides. By some compulsion, Heather couldn't help but put her arms by her sides, and they slipped into the mare's slit too. She could feel the slick fluids of the pony's vagina rubbing between her clenched fingers.
"Keep going, you're nearly there!" Angie giggled, as if Heather had any actual control over her movement into Nadia. Eventually, Heather found herself looking straight forward, with the back of her head (and her long dirty-blonde hair) bumping against top of Nadia's musky labia. Her body had stopped its drilling into the mare's backside.
Heather was stuck. Her whole body felt squeezed inside a warm fleshy pocket, with her limbs only able to twitch slightly. Heather wondered if she should be afraid, though it was all quite comfy. It's as if her entire body was being intimately massaged by her pony...or even, she was being birthed backwards!
She could hear Nadia neighing in pleasure behind her. And like Olivia with Lib, the girl could even feel the soft pulsing of her pony's heart.
"Haha!!! Heather, you look so weird!", said Olivia, laughing. Lib had trotted closer to Nadia, and Olivia was now looking down upon her friend.
"I'm stuck in her butt!" exclaimed Heather. The two girls broke into even harder laughter, as Nadia's tail came down again, and brushed over Heather's face like a giant mop; leaving her nose sticking out. Heather playfully spat out her pony's tail hairs from her mouth.
"Comfy, isn't it?", said Miss Angie, as she gently held the pony-tail back up. "Now, let's make you REALLY one with Nadia."
With a wave of the witch's hand, Heather felt her whole body tingling. Through magic, Heather's brown hair suddenly shimmered with light, and evaporated into dust strand-by-strand.
"My hair!", said Heather in awe, as she slowly went bald. Inside Nadia's backside, Heather's whole body was getting numb and hot. The numbness first came to her limbs, with Heather losing sensation to her toes and fingers. Then it came to her privates, and then her belly and torso, all the way up to her neck. It was as if all of her body was melting and sticking into Nadia's insides.
Though Heather couldn't see it, she felt her pony's slit sticking around her neck, and sealing around it completely. Her head sunk further backwards, only to settle once the back of her cranium melted into Nadia's skin, with fur spreading upon the fusion point.
Lastly, for now, came Heather's ears, which melted and withered into Nadia's skin. Surprisingly, the girl found herself still able to hear, as if Miss Angie had gave her some magical-senses as well.
The changes stopped. The space that once home to a pony's vagina was now occupied by Heather's young, innocent and very astounded face. All her sensations were concentrated only around the area of Nadia's privates, though Heather had some vague sense of pony's legs and rump-cheeks too, as well as Nadia's tail and teats. Everything else was numb to her.
She was now nothing but a passenger to a horse's body. A part of Nadia's butt.....and it was amazing!
"W-whoa!!", Heather exclaimed, as she felt herself rising from the ground. Nadia had lifted herself back up onto her hooves, with Heather now along for the ride. With the mare's tail still lifted on on its own, Heather found herself right under head-level with Lib, with the stallion's curious eyes coming upon her.
"Aaaalright, I think we're ready!" said Miss Angie, with an elated grin. "Olivia? Heather? Ready to help these ponies fall in love?"
"Yeah!!!!" the children-turned-body-parts cheered. At hearing that, Miss Angie weaved another spell with her hands.
Time to give these girls the experience of their lives.