Nadine turned towards Sabrina, but she wasn't in the hall anymore. She did see Jon, but not Sabrina. After walking down the hall a little ways, though, Nadine did spot her. She was talking with Melissa.
Nadine waited until their conversation was over before she attempted to take the wishing stone from Sabrina. Walking towards her, she saw the stone. It was in her hand. This was going to be simple.
The real Nadine saw what her body was doing, but was unable to stop herself. If this wishing stone really was real, then Goth Nadine was the last person that should have it.
But before Nadine could get to the stone, Sabrina mouthed the words "I wish ..."