Sally strained, the limits of her little girl knowledge pushed by the question.
Finally, Linda, who was an adult, grabbed the comparatively tiny Sally, lifting her up into her arms. "I am the adult...you are the child!!" She screamed into Sally's face.
Linda suddenly got hit by a wave of dizziness and fell backward onto the bed. She looked up to see Sally standing there. Then, like some sort of stop motion animation, every time Linda blinked, Sally seemed to change.
BLINK The baby fat was starting to melt off of Sally's face. BLINK Sally began to grow more rapidly, her form filling out. Hints of breasts appeared, turning into more than hints. It took only a few blinks before Sally looked to be sixteen or seventeen...almost as tall as Linda herself, before it started to slow again.