You will actually see the winged women part in many differnt articles on the subject. In fact, one can easily see a parallel in the Harpies from Greek Mythology, who develope from beautiful, winged women into ugly winged monsters with the faces of ugly old women, and also prevent Phineus from eating food. The modern paralell is the "guardian" of anorexics and bulemics, which appears as a beautiful winged young woman, but in reality is a demon creature that keeps anorexics and bulemics from the food they need. The girls think the "guardian" is on their side, but in actuality it is their to torture them. The only way they can find freedom is to get help from a higher power, such as Jesus.