Rachel suddenly wished that she was the same age as her 'new' sister. Her sister was around five years old.
Rachel started to get smaller. As she did, her body aged backward. Her face slowly became more and more juvenile. As she got smaller, her boobs shrank away. Her hips melted away. She was a stick again.
Before she knew it, she was a five year old girl. Her diaper remained on her but shrank down to fit her new body. Then a pink dress like the one her sister was wearing formed on her.
That was when...