Try as you might, you're unable to fend her off and Kelly is able to slip the bit of blue carrot into your mouth, covering your short muzzle until you swallow. She immediately sits back, releasing you so that she can observe the effects.
"What the FUCK, Kelly?!" you sit up awkwardly, wiping your mouth against the furry back of your paw-hand. Looking over at her, you're shocked to realize you have to look UP a lot more than you should. Squirming in your suddenly baggy clothing, it's obvious the bit of carrot she just force-fed you is having her desired effect: you're definitely shrinking. "This is impossible" you mutter, your voice coming out squeakier and more high-pitched as you shrink into the pile of your clothes.
Kelly leans forward, a pleased grin splitting her face. "Oh man, you are SO much cuter than I could have imagined! I'm almost sort of jealous - you'll get to have a care-free week without responsibility, while I'm still stuck as a boring old human!"
"But whry am I BLUE?!" you screech, you're tiny voice coming out a bit garbled around your enlarged teeth. At least you can still talk, you think. It must take a bit more carrot to turn you all the way into a rabbit.
Large hands part the piles of fabric around you, and you instinctively nip at them, your tiny body quivering with adrenaline. But despite your squirming, Kelly is easily able to get ahold of you, pulling you out and raising you to face-height. Her gaze studies your changed form, cataloguing your new appearance.
"Well you allllmost look like a regular rabbit, other than the blue fur, I mean." she tilts her head and twists you slightly to get a better look. "Your arms are still a little long, and you're about the size of two-year-old kid, so I'd guess it'll only take a few more nibbles."
You twist violently and shriek "PUT MREE DOWN!"
"... and you can still talk, apparently." she quickly shoves you towards the cage she'd brought, cramming your fuzzy form inside the too-small container and just managing to lock the door. "Don't worry, I'll be right back with a final bit of your treat, babe!"