Why don't you just talk to your mom about whats happening. Shell probably understand. Until then just remind the girls that they wore training bras at one time also.
And everybody grows at their own pace. By regular bras withput mom knowing and when she finds out be all like im old enough to get them.
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.