- Blending Options -> Inner shadow -> +100 angle -> opacity 60-70
- Copy layer -> Gaussian Blur (3.5 or 3.0) -> drop layer opacity to 20%
- Merge
And see what happens. I guess it will "embed" the woman more into the picture. Now it is too clear that the woman is a crop image due to its sharp edges.
her shoulder feels shadowed too much. Perhaps just an emboss would do better. Also, you can have her in layer blending options and then chose one of those (overlay, etc) maybe she will blend in nice.