The Chinese national this afternoon appealed that decision but it was upheld by Justice Matthew Palmer.
Wang has denied a charge of careless driving causing injury relating to the crash in August.
Rutherford and her daughter Ella, 13, were riding on Postman Rd in Dairy Flat, nort of Auckland, when a car allegedly struck George, the horse she was on, throwing Rutherford into the windscreen.
The 43-year-old's leg catapulted into her head, the force of which tore the skin and tissue away from the muscle, almost ripping her leg off.
She also suffered multiple broken bones and gashes and still needs a crutch six months on.