Yeah, that... wasn't supposed to happen. I didn't mean to change the very foundation of your being.

[ Satan looks at her, searching for any sign of distress or anger, finding none. Huh. He's not sure anyone has ever taken a spell backfiring so well. ]

It'll only be temporary, so you'll shrink back down to cookie size eventually. Maybe within a few hours? Afterward, you can let me know how you like it. I can store the spell for you and you can use it whenever you like -- if you like. I'll set it up so that the amount you use determines the length of time you stay in this form.

[ Just in case she comes to hate looking like a human. ]