In Steubenville, why didn't other girls help?

Is anyone else wondering why the Steubenville, Ohio rape victim's two best friends testified against her? With this week's arrest of two other girls who "menaced" the teen victim on Facebook and Twitter, we have the beginnings of an answer.Rape culture is not only the province of boys. The often hidden culture of girl cruelty can discourage accusers from coming forward and punish them viciously once they do. This week, two teenage boys were found guilty of raping a 16-year-old classmate while she was apparently drunk and passed out during a night of parties last August. Everyone who was there and said nothing that night was complicit; if we want to prevent another Steubenville, the role of other girls must also be considered.On the night in question, girls watched the victim (Jane Doe) become so drunk she could hardly walk. Why didn't any of them help her? …Read the rest of Rachel's piece at CNN.com