After seeing that footage, without a doubt she knew it was happening and encouraged it.
However, I stand by my opinion as expressed in this thread.
My comments have been on how, in general, this is widely accepted and how this sort of thing is considered a big joke. This girl has set a bad example, the boys have set a bad example. If they want to play that sort of game, they can do it in the privacy of one of three bedrooms at home after the show runs it's course. These actions simply reiterate what I said in my second post, this sort of thing is being done and accepted as normal by impressionable boys, unfortunately, I didn't include by impressionable girls too.