As Kellie came out of the porta-potty, she had a thoughtful look. "Katie, how much of reality could you change with your ring?"
"I'm not really sure," said Katie, "I think it's mainly bound to age-altering, but it can still do a lot."
"Well, I was thinking, I'd like to spend more time with you as adults, but I can't leave my parents childless," said Kellie.
"So you what do you want to do about it?" asked Katie.
"What if I had a sister? That way whenever we want to change our ages, they'd at least have one daughter with them," said Kellie, "It would be like how you can switch with Lisa over who's the legal guardian in your house."
"Hmm, I suppose. But where are we going to get you another sister?" asked Katie, "I'm pretty sure the ring can't conjure one out of thin air."
"I can think of at least four possibilities," said Kellie, looking back towards the swimsuit shop where Lisa and the other girls were walking out in new swimsuits, talking among each other like they've always been friends.
"Really? After all we've done to them so far, now you want to force one of them to be your twin?" asked Katie.
"Well, maybe not the same age as me," said Kellie, "What I mean is, if you could use the ring to wish one of them into being my older sister, I think that would be enough. Besides, they've already become somebody's daughters when you aged them down. We can fix things later if we have to."
Katie thought it over. She admitted she liked her sexy adult body and she was definitely wanting to explore more of Kellie's. It seemed like a simple enough solution to keep everyone happy. But the big question was which girl should be Kellie's sister?