Pretty girl... shame about the feet

I've looked at this photo a number of times, but each time I am drawn to those quite disturbing feet poking out from the bottom of those strange sock things. Was that intentional? Were they socks that have simply worn through because of so much dancing? Is that paint to match her khaki-coloured top or is that mud?

If you are she, or you know her, please let us know. We are worried.