When Jane entered the house, she saw Jon and Zoe in the living room. She was shocked to see that they had both changed.
Zoe wasn't goth, wearing a blue T-shirt, and white mini-skirt instead of a corset, and normal tennis shoes and only having one piercing in each ear and no nose ring, and none of the other piercings or tattoos she had before. All of her black make-up was gone and she no longer wore a spiked collar. She looked quite wholesome, she looked like a more normal teenager girl,
Jon, however, had become a Girl. She now wore a pair of hip hugger jeans, a white T-shirt, and one inch platform heels. She had a piercing in each ear, she was wearing regular makeup for a teenage girl.
Apparently, the stone didn't just make them get along with each other. It changed them both into regular girls so that they had more in common with each other, so then they would get along with each other.