"You know I always liked cats. So I think I would transform into one. But thats a rather stupid question. Things like this doesn't exist."
"Maybe, maybe not. I will pick you in in 2 hours and then you will see whats going on." Mary hangs up. - Time for some preparations. She puts together some clothes and calls the work Extra holidays. Her boss wasn't pleased but granted her wish. When she carefully put the vials away, she had a great idea. Transformation cookies! Why not. She had enough time and she wouldn't have to deal with the vials for transformation.
She rushed into the kitchen and made 3 piles of batter. She poured a whole vial into each pile. Quickly into the oven and finished. Tasty! During the baking the shape of the cookies changed. She received human shaped, cow shaped and cat shaped cookies.
She also found some time to study the instructions more carefully. Lot's of stuff was written there. But the most important parts seemed to be: "After 3 days without the further usage of a vial, you turn back automatically and only 1 vial can be active at the same time."
After storing everything away and cleaning the kitchen she was ready to go.