Who's Sally?

"Who's Sally?" asked Jon's mother. Jon thought his mother misheard him. "Sally!" "Don't yell, Jon." Jon sighed. Shouting might be distorted. He spoke as clearly as he could. "Sally." "I have no idea who you're talking about. I don't know why you're calling, Jon. This better be important. I shouldn't be talking while driving." "Sally, you know ... you *must* know ... Aunt Sharon's daughter!" "Don't be ridiculous, Jon. Aunt Sharon never had a daughter. That does it. Don't call again." She hung up. Jon stood still. He couldn't let go of the phone. *Oh no,* thought Jon. *What have I done?* Jon didn't realize it, but Sally had been born into another family. She materialized in another house. Her genes had been changed to match those of her new parents, who were ...