Carrie takes imense satisfaction in knowing what she has reduced Todd to, but yet, there is a missing void, she can't atcually see him humiliated up front, and that really bothers her.
She decides to make herself 5, so she can join him in preschool and have fun at his expense, she quickly climbs over one of the fences when no one is looking, and then reduces her age to 5. She decides to change a few things about her apperance too, since Todd did also see her as a 5 year old earlier, so he can't regognize her now.
She walks around trying to find Todd, and can't help but see so many interesting oppertunities, she could swap the bodies of an adult man and a 4 year old girl or change the gender of a bully, anything, really! There were so many oppertunities, she didn't know where to start.