Iggy, I have ran into this same situation before. Sometimes I can fix it and sometimes not. I would have tried having her turn her head maybe just enough to where the light didn't hit her face. But that may have taken away the lighting effect on her hair too much. If the light is low enough, and it looked like it might have been here, and I have some one else there I have them stand just in the right place out of the frame to block the sun where needed or hold a hand or something up to block the light. I once had someone hold up a jacket to block harsh light in the subject's face. Course I wasn't there and maybe none of those things were possible or would have worked. Just some ideas and suggestions you might use if possible in the future. But i do like mellowinman's fix.