At various points in the film we can see that the nude, dead She-Demon has panties on, which are the same color as her skin. When Brandon tries to escape through the chimney, we can see the panties at the bottom of the mid-shots of the She-Demon. Though moments later when Brandon is actually going up the chimney, the camera pans down her body and you can clearly see that she's nude. Later, when Heather stops looking for Brandon and goes into the bathroom; when the She-Demon rises out of the bathtub at a 90 degree angle, she most clearly has panties on.