You can be civilized mature "friends" basically grownups. The way you once felt you may not feel that way anymore, or the things you had no problem doing you may not want to do, but until your financial ties are broken you have to have some type of camaraderie. This will keep things sane and in order until you move on.It can hurt to remain friends, but it is better than behaving negative by holding a grudge and being enemies.
It's always better to try to be civil and resolve whatever issues underpinning your relationship with your ex. That there is still a financial tie makes it more important to do this. It can be difficult if she wants to be friends and you don't.
There is no need to be insincere about the issue though. I say just be civil until you can completey close that aspect of your life.
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.