Ok there are alot of things going on here. It is ok for you to masturbate, you are not an idiot, mom will not punnish you for masturbating. Mom already knows you do by the smell and the wetness, you will not go to hell, and it is perfectly for a catholic girl your age to do this.
The reason mom reacted the way she did is because unlike you she has not had an orgasm in a while.
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.