I wasn't familiar with this photo project before viewing this picture, but my take on the photo before seeing the commentary was the same as after. I don't think her premise or findings were at all surprising or revealing, but that could partly be because I photograph so very, very many children. Girls start this behavior early on, and there's no question that they're largely reflecting the values and norms of their society. On the other hand, children are sensual (please don't confuse with "sexual") and exhibitionist by nature; society and experience only make it more pronounced.
It should come as a shock to no one that girls and women judge each other, have body insecurities, and say hurtful things about each other's appearances. LOL.