Julie was unaware of the changes. The toy utterly entranced her. She had just stared into the My Little Pony toy to become completely enthralled by it, as if she had been hypnotised. As such, her transformation was only noticed by her when it was over. And too late. As Julie looked at the toy intently, she got engulfed by little lights swirling around her, like big fireflies. They spun and spun around her, transporting her into the land of magic of My Little Pony and transforming her into the very character that she held. She would live many, many adventures of epic magic and of ponies and other mythological creatures. A much better life than the one she currently had and that allowed her to live her dream existence and passion for fantasy in full.
Summer had stared at the scene, hidden behind the shelves of an aisle. She smiled slightly and more inwardly. Oh, she could guess that this girl would not have an easy life so letting stay an eternal child in a wonderful world of magic where everything always ended well was much better. She'd always be happy as her favourite character, going though difficulties but never actual death or bothersome things like unemployment, meeting perverts, homework, taxes, growing old and all those pesky things inherent to life in the human world. As the older sister was now in willing survive for The Magic Shop, then it made sense for both to forget each other but living respectively pleasant lives away from irresponsible parents.