All I can say about this shot is that the concept and execution of it is beautiful, simple and powerful. In other words, the look on her face tells the story in itself. It is haunting but yet contemplative. The look the feel is all telling the story of someone just taking a stroll and thinking about what is going on with them at the current moment. The backdrop is almost a reminder of the Garden of Eden and just keeping in the moment with that effect. This is excellent work on both the part of the model and the photographer.
I am sure she was taking a stroll in her private garden and has been suddenly surprised by our appearance, pulling her top together but still retaining her dignity as portrayed in her facial expression.