That's really insensitive you should talk to her about it and tell her how it made you feel. If she doesn't understand that she acting in a that way hurts you then you should consider breaking up.
I wouldn't consider breaking up unless there are other ongoing problems between yourself and her. Although if she sees you crying and asks whats wrong and you say nothing how can she show compassion for you crying if she thinks you're crying for no apparent reason? Next time just tell her what really happened.
I wouldn't worry about it too much, but you need to talk to someone about the abuse as that is the real problem in your comment. Talk with her and it will possibly bring you closer together.
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.