Kat looked at him, with a grin smile on her lips.
"Do you like this, little brother? Oh, wait. You're going to be a rat, so... you'll become smaller. Smaller than my feet!"
Dan loses her vision for a while. When he opens her eyes, first he could see was a huge foot. He looked up, and squeak in horror. "Now you're completely what you must be. A small rat."
She laughed while he looked at her body. Indeed, he was a rat at her feet. He tries to think a way to recover her body, but he didn't know anything about magic and witches.
Then, he tried to run away from her, but she was more quick. He felt suddenly stopped, and saw the huge foot of his sister over him tail. She laughed again, and picked up Dan from him rat tail.
"Stupid rat... I'm not going to let you escape easily. I want to see you live at this form." She used her magic to create a cage for Dan, and put the little rat inside of it.
"While I think some more for you... live as a caged rat, little brother"