I need advice.how do I stop regretting that I have let my grandmother treat me like that?

Holy damn.... You need to call Childline, they'll help you with this. Your mother and step-father are being incredibly abusive to you and your sister. Please honey, you're not overreacting, I would NEVER treat my girls this way, and this is not your fault at all, I promise.

They sound like awful people for treating two vulnerable young girls with such abuse. Call the police, or contact Childline. I seriously feel so bad for you, I just want to scoop you up and take you away from all that, because you don't deserve it... Seriously, call them.

The sooner you call, the sooner you and your sis can start living happier, healthier childhoods.

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.