@kierkegaardrulez ordinarily I'd agree but this one of the absolutely greatest violinists in the world; check other videos of her. The problem is the piece bites, but her playing brilliant and I doubt it was speeded up (again compare with her other performances)
VERY talented, but too much is wrong; needs use bow pressure more carefully, needs to vary vibrato speed (generally faster), needs to vary sounding point
MIGHT WELL BECOME A WORLD-CLASS SOLOIST, BUT IT'S A BIT EARLY TO BE SURE...teacher seems OK....