I saw her rotating clockwise initially, but I can switch at will. In fact, I can make her pivot back and forth without rotating as long as I don't look too hard at it. That doesn't look so good, optically - the limbs she's using are on different sides for each of the two directions of rotation. That's what makes it hard to change your interpretation. Also, the brain filling in perspective where there's only silhouette seems to be the only reason we see rotation in the first place - we expect to see, with binocular vision, how the leg/arm/hair move into the distance and back out again.