Put a lock and key on your door. Dead bolt it if you have to. You could report her for stealing your items - you have the pics to prove it.
Seeing they're in your brother's room, it might get him in trouble too. Guess you might get in trouble for assault. Where are your parents in this?
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.