I took some more pics of my wife this weekend. We tried taking pics outside this time. We had her brother help with the reflector/diffuser. For the first two pictures, he held the diffuser to camera left, very high and close to her. I think it helped soften the light some and keep her from squinting so much, but I think it dimmed her too much. However, I did have her face away from the camera and turn around towards me. This definitely helped for posing her.
I didn't have the lighting how I wanted. I had her brother hold a silver reflector to camera left, but I don't know how much light was getting on her.