Joanna picks up a mouse mask. It looks very old it is carved from wood and has leather ears a pink nose sits at the end of a cute snout long whiskers stick out either side. the whole thing is painted white with tan spots one of the spots is over the left eyehole. two teeth stick out of the bottom of the snout.
She puts on the mask and walks over to the mirror. She is surprised to see a naked mouse girl in the mirror. the mouse girl perfectly copies every move Joanna makes. Holding her had in front of her face and she sees a mouse paw! she looks down at herself and sees splotchy brown and white fur covering her body! in a panic she reaches up and grabs the sides of her head to take the mask off. it comes off easily and she is human again. So is the reflection in the mirror.
Joanna is amazed. she thinks for several minuits about how she has found actual magic. she puts the mask back on the the mouse girl is back. this time she examines herself more closely. she is really short, like the doorknob is shoulder high now. her fur is so soft she thinks as she strokes her arm with her new paw. her breasts were smaller but she had eight nipples running in rows down her chest and belly a gentle exploration showed her that there were tiny breasts behind each nipple. Her hips and butt were much larger. Then she got a first glimpse of her tail she grabbed it with her paws and felt the new appendage.
She moved back to her face. Beneath her twitching nose long front teeth were visible. Opening her mouth she saw her long bottom front teeth. her new whiskers were very sensitive. She could even feel air currents. The new round ears on top of her head were very sensitive both to sound and touch. She could hear things throughout the store, and even tell where other customers were. She could smell the ones that were not too far away.
Reaching up she removed the mask again, smells and sounds were dulled, she gained a bunch of height and she was normal again. She had to have this mask. she ran to the front counter and paid the man. before he handed it back to her he told her to give 24 hours between wearings and not to wear it for more than 24 hours at a time.