Name Confusion

"Oh no, I really messed up," Karyn (now named Karl) said. Jon looked down at the object in Karl's hand. "Karl, what did you wish for?" "Hey, how do **you** know about my stone?" asked Zoe. "Because it's **my** stone. It only became yours because of a wish that Mike made." "Mike?" asked the confused Karl. "Yeah. Mike. Your sister," Jon said, while gesturing towards who was once known as Megan, Karl's sister. "I'm confused," Karl confessed.