Grip looks okay from here. Elbows could be a touch lower, but there is nothing that jumps out as incorrect. Make sure your friend is not trying to push down on the bar. It looks like her knees are too far forward. I would not narrow her stance further. In fact, a hair wider with toes out a touch might be just right. Her knees look to be too far forward. Hold the knees back some and lean over more.