Looking at the flask, Naomi had an idea. She'd always had a bit of a transformation kink, and she could always just take a hair from her brush and put it in the flask to undo the transformation. Besides, it was just for a little while, right?
Now, who, or what, to transform into?
Naomi decided that she would try with someone relatively safe, and fetched one of Tessie's hairs before putting it into the flask and dunking it into her head.
Suddenly, the world lurched, before her view started shrinking. She could feel many tiny hairs sprouting from her entire body, her face elongating and her hands shrinking and fusing together.
It wasn't painful, just very disorientating. Before long, Naomi was fully transformed into a cat with a tuxedo pattern, slightly smaller than Tessie. Unused to 4 legs, she stumbled over to the mirror to look at her new form.
It worked! The potential of this flask was immense. She needed to turn back, and start taking notes, looking around she tried to find her brush.
Naomi froze, her brush was in the bathroom, where her newly transformed tom-cat ex was. If she wanted her old human form back, she would have to find a way inside, that meant unlocking the door.