Not creepy at all. I don't recall the technical term for it, but the image of the trees, window screen, and bushes outside the window altter her reflected image somewhat, and your vision uses those parts of the image to fill in the blanks and make her image appear whole, and changed; as well as the camera angle is causing the image to appear distorted. There is an incredibly awesome place in Edinburgh, Scotland called Camera Obscura. It's a real visual freak show of a place. This exact type of thing was explained there.