The ray of light peeking through the crack creates a blinding effect on the subject. The light is so bright that it blinds her vision, covering her eyes in the photo. The black and white filter makes the ray of light even more bright.
This picture was taken with an incredibly fast shutter speed so that it could quickly capture the flying water droplets. The reflection adds so much more of an interesting view to this picture; because it's as if you're seeing it double.