No one should really surprised at this. This happens hundreds a times a day in the schools and with kids much younger than her.
If you could see what happens in inner city classrooms...well, all hope would forever be lost. It is hidden extremely well.
You would not believe it.
There are kids wearing ankle bracelets. They assault their teachers. They overturn chairs. They are having sex and drugs in the bathrooms.
If it makes you feel any better - just keep thinking it doesn't happen in your school district but only happens in high school. But you are wrong.