"Amethyst, John could drink the fairy vial to become your sibling again. He wouldn't be a fairy, since fairies are girls, but he would be a pixie."
Amethyst looked to her. "Really? Well it might be kinda fun to have a brother, since you say I did. What do you think human?"
John looked between them. "I dont know, I want my human sister back..."
Amethyst shook her head. "I dont want to be human, child....even if I was."
John was crestfallen, in an instant he'd lost his sister. Now he was an only child. "I dont know, I mean...I...cant you take it?"
Amethyst glared at him. "You want a sister, you become a pixie, if not, I suggest another vial."
John looked at them both, then he looked through the vials. There were any number of choices, but he had an idea...