There are two separate questions there. Firstly if you have blocked someone, they shouldn't be able to see anything about you in FB itself, although she would in external applications. Are you sure she is correctly blocked?
If so then you have a glitch, I would contact FB through the help centre for that. To stop items showing in their news feed - you can't. You can only control what you do on your own wall.
If you comment on a friend's page, it is your friend's security settings which determine who can see it.
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.