"Huh." You say as you aim the gun at her with the new setting attached. The familiar burst of light hit her, and then you watched her rapidly change. Her body began to get even fatter, but her tight clothes began to reform. Her pants vanished and her underwear began to puff up and become crinkly plastic. It was a diaper!
She continued to pick away at the guitar as she didn't seem to notice the changes. Her shirt shifted and revealed much of her expanding belly, but covered her fat breasts. It now had a picture of a cartoon mouse on it.
Her flats burst off her feet, leaving them bare as she began to shrink. Her height dropped down siftly, leaving her half her size, still playing the large guitar, which she struggled with, but didn't seemed alarmed by this. Her hair tied itself into two tails that bobbed about as she played. A pacifier appeared in her lips, which she began to suck on.
"She didn't regress physically, but she shrank. This thing is insane." you noted.
Then...