Suddenly Mary's entire body erupted in irritation. The itchy feeling of hundreds of thousands of hair follicles kicking into overdrive assaulted her mind. She scratched furiously, but the feeling only died down once there was a solid inch of hair growth all over her body.
She watched in the mirror as hair piled out, fluffing up her clothes and sticking out of her collar and the hem of her shirt. She began to feel incredibly hot, and stripped completely bare. She found that every inch of her body from the neck down was now adorned in a thick, silvery coat of luscious, silky goat hair. It shone in the light from the window, and it kept on growing until the strands were at least six inches long. It grew thicker around her privates, around her neck and breasts, and around her ankles and wrists. The hairs in those areas were even a little darker. Her face was the only place untouched, except for a short beard that had sprouted below her chin.
Finally, Mary could feel the growth stop. She couldn't believe her own reflection; a human woman, having just grown her own insulating layer of fur!