If you have been told by your parents that you can give her whatever punishment you see fit then I would say ground her (take away everything she likes to do, whether that is her phone, computer, TV, etc.) and tell her she can't hang out with friends or do anything for like a week ot however long you see fit. If your parents didn't say anything about punishments then I would call them and ask what they think you should do.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.