Derek was paralyzed with fear, quivering and still attempting with every ounce of strength he had to try and get away, all in a futile effort. Zoe, for her part, was enjoying watching him squirm, but decided she would change things about him, one step at a time.
"I've decided to turn you into your fantasy," she said aloud, smiling. Derek was nervous still, and at the same time curious as to what that meant. He felt a tingling on his scalp, and glanced over to the mirror. Much to his horror he saw his short, boyish hair cut dissolve, and his hair literally fall out of his scalp in waves, becoming lighter, and lighter, until it was a bleach blonde that shone in the flourescant lighting of the mall. It continue to grow, and became curlier at the ends, till it finally stopped to just above his knees.
"I know you love long hair," Zoe said playfully, "have fun trying to take care of that much hair."
"Please Zoe, you've made your point," Derek tried pleading with her, but she just kept on smiling. Horrified, Derek looked back into the mirror and saw more of what was happening. His eyes lost focus and then readjusted, having changed color to a crisp ocean blue. He saw his face round and become a picture of feminine beauty. His eyebrows thinned, his cheekbones flushed, and his nose shrank down. He felt a pinch in his ears as two diamond studs appeared there, and then felt his chin shrink down. As his mouth become smaller, his tongue forcefully stuck out, till it too shrank down, leaving behind puty lips with a natural red tint to them. Derek's throat then went dry, as his Adam's Apple vanished into nothing, and his guttural gasps of fear became higher pitched. Derek didn't speak, for fear of what would come out of his throat.
His shoulders thinned as his muscular arms thinned and became trim, but toned female arms. His hands became thinner, and his fingernails lengthened, getting red nail polish on them in the process.
Derek gasped as he felt what was next. His rib cage became thinner, but the flesh did not pull as tight. Instead, he saw his nipples become erect and as large as silver dollars, before the flesh around them started to expand and push outward. Further and further they went, becoming a set of large, and overly sensitive, female breasts. Derek watched in abject terror as they continued to push outward. If he was going to become his fantasy girl, then things were going to be bad indeed. They continued to push outward, till they finally stopped. Derek knew from first hand experience that he wanted to fuck a girl with K-cup tits, so large that they couldn't even run with them. He thought they might even be bigger than that!
Derek then felt his waist cave inwards, shrinking down to a beautiful hourgalss figure. He then saw his hips pop and expand outward, throwing off his balance, nearly causing him to tip over.
That's when he did notice that Zoe seemed much larger. It occured to him, his fantasy girl was short, around 5'1'' tall, so that he could feel much more powerful than her. He never expected to BE her.
He felt a tingling sensation in his ass, and managed to turn around to see what was happening there. His ass expanded outward, becoming rather round and large, just like his fantasy girl. Next, his legs reshaped themselves to become just like a supermodel's, devoid of any hair. Finally, his feet shrank down, becoming petite and complete with red nail polish on each toe. As Derek looked at the mirror, everything was perfectly in line with his fantasy girl, including the rich tan skin color he hadn't noticed before. Only one thing was missing, he still had his cock nestled between what was most definitely a female body.
"Oops," Zoe said, taunting, "I guess I forgot something, didn't I?" She focused as Derek this time cried out in pain. His dick went stiffer than a board, and slowly began to withdraw into him. There was a disgusting sucking sound as each testicle was forcefully ripped up from its scrotal resting place, and transformed into a female ovary. Finally, the scrotum split and became a set of vaginal lips, as the penis completed its transformation into a set of fully functional female genitalia.
"Well now, Tara, I think we've done a good job with you. Just one thing missing...." Derek, now Tara, was horrified as female clothes popped up all over her body, including a pair of crotchless panties, a skimpy bra, a not-so-much there tanktop, and a short skirt that left nothing to the imagination.
"Please," Tara pleaded, now startled by her own voice, "Change me back."
"Oh I'm sorry," Zoe said with a smile, tucking the rock away in her shoulder bag, "But I'm afraid you should of thought of that before you dumped me. By the way, everyone thinks you were Tara now, a bubbly and not so bright cheerleader. You'll have all the memories of that live, and can act only that way in front of everyone else. When you're with just me or by yourself, you'll remember everything you've done, cause just like your fantasy girl, Tara is a real slut." Winking at the new girl, Zoe walked away, as Tara was now free to move, and all the people suddenly returning to the mall per Zoe's original wish.
Zoe walked outside, feeling very good about herself. But she knew that this rock was too good just to be used for revenge, no, she should do something to help some friends of hers. She unfurled her wings and took flight, eager to help someone.