When the boy stopped changing, Jon saw Karyn in his place, wearing the boy's clothes. It was the original Karyn, the one before the blond hair and bigger breasts wish.
After Jon sneezed, he was thinking about telling Karyn about the wish he made the previous night, thinking that his sudden sneezing fit might have something to do with it. And since he was thinking of Karyn, the boy became Karyn.
She looked down at him and said ...
