A few hours. She had to find another dog to replace Max. Fortunately, now she had a magical transformation vials, so she can make any kinds of living thing to look exactly like Max.
Mary opened box of vials, and she started to find an another dog vial. She searched the box for an hour and found vials with specific dog breeds, including doberman.
But suddenly, she thought that if she uses any animal, it wouldn't behave like Max. So vial should be drunk by... her.
She didn't like than idea, howerver it was the only way to bring Max back to John. After a bit of pondering, she decided to hide a avian vial at the trail she met Max and John, and transform into Max. She thought that if she did that, she could run away from a walk with John as Max, find a avian vial and transform into a bird to come home and drink human vial.
First, she set the avian vial under a stone nearby the trail. And when she returned home, she mixed the doberman dog vial and the male vial and prepared to drink. Also she found Max's collar and got on it to herself. And she walked out in naked(fortunately there wasn't anyone could see her), and she tied a snood on collar on the door of John's house. She sent an tex massage to John before she drank the mixed vial : "I'm sorry, but I have an appointment, so I'll snood Max to the door of the house."
Now everything is perfect, so she drank the mix of the dog vial and the male vial. The fist change was shrink of her breast. They become flat for a few seconds. At the same time, penis and balls grew on her crotch. She, now he wanted to enjoy with his new awkward genital. But, another change came. Unlike last dog transform, it happened very quickly. Short black fur covered everywhere of his body. His hand and feet turned into dog paws, and arms and legs to suitable form for walking with four legs. Also tail popped out. Lastly, he shrunk down to about 2 feets.