Jon started to cry. "I wish I was never in that accident." Since this was his second wish, it was granted to the person nearest to him, which was the nurse.
In the blink of an eye, the 30-year old nurse just disappeared.
Jon stared at the spot where the nurse used to be. What was happening?
Back when Nurse Mary Robinson was a teenager, she got herself into a minor car crash, but to her it was an event that significantly changed the path of her life. Now, thanks to Jon's wish, reality had changed so that Mary's accident had never happened.
Since she heard the wish, she'd know that things were obviously different, but how different were things in this new reality?