They weren't part of the group that photographed her naked, they just teased her about the photo. The ones who photographed her all got kicked through a wall and then extorted for a massive sum of money, which isn't enough but it's not nothing either. It seems strange to rate the series purely on how much payback the bullies get, but each to their own. Personally I'm more concerned about how she blew up the training arena and created a massive crater behind the building and nobody in her class seems to know she was the one responsible.