I don't see the thumb print, but my eyes are old.
Your main light and your hair light should be metered the same. The texture of the light will be different--which is a good thing--because your main is difused.
Try this Don. Same pose. Hair light to your right and main to your left and increase your main 1/2 stop. This should eliminate the shadow by her cheek. Also move your main right next to where you are. Put your lens right next to the soft box/umbrella.
Keep in mind that when you difuse your light the light is going to be bouncing around in all different directions. If you have a soft box feather the light (don't point the light directly at the model) so that you only use a portion of the light. Use your modeling light to see how the intensity of the shadows react to the position of your light as you feather it. You will need to flag/scrim the light to eliminate lens flare.
Keep experimenting and playing with the lights until you are comfortable with what you like then run with it.
Here's an image that uses the technique just described. (Oops. High Key. No hair light. Hair light used to illuminate the background) See how the shadows are softer on her neck and where her cheek meets her mouth. Lighting set up, courtesy of JT Smith from his last KC workshop.