Next time get down to her height; shoot level to her.
Also, in harsh sun like that, try to put her between you and the sun and then expose for her face. This might make for some blowouts in the sky/hair, but it beats it happening on half her face. She could have rotated 180°, with the sun to her back and had even lighting across her face.
Otherwise, this shot could have used fill on her right side.