I think that the fact that she is looking away from the viewer coupled with the fact that her face is prt hidden makes it difficult to find focus..my eye doesn't "land" anywhere. The angled branch on the tree points me to her hat. I think you want the focus to either be her face or the flower. I wonder what it would look like with a DOF render with the flower selected? Sorry for rambling, ICM has got me focused on composition these days...it's all his fault.