Thanks for your message. Well, you may be right.
In fact, I was particularly pleased with the lateral light on her face and I wanted to enhance the fact that the light came from an open door by leaving that area. Moreover, the fact that she was slightly turned toward the right part of the picture was an appeal to leave that right part empty, trying to stress how shy she may be facing me so close in this large space. I don't know if the picture conveys my feeling :)