Background added - some dark marble pattern paper on a sheet of foamcore.
NOTE: the lighting here was whatever light happened to be coming in the window behind her and the door to her right - an accident. I kind of like this accidental lighting better than my 3-light studio setup, but that is a secret.
When I covered the window with the marble paper, the exposure changed so much that her hair is now backlighted by the incidental light from the window, and the desk lamp to the left is warming her face and casting a shadow.