A friend's question

I recently got asked by friends how and why my novel Kril evolved, particularly why were the Female Ovals the bad guys? I asked if they finished the book?  They said not yet. I told them don't rate a four course meal after only tasting the appetizers. Without spoilers, the questioners wanted their curiosity addressed; so here goes.
During my experiences in combat, when things got heavy, remembering back, all the colors of the rainbow instantly changed to black, grey, and white. Time stood still, seconds and minutes lasting  relatively hours.  After seeing people die, many years later I wondered if I had seen a quantum-many-worlds event; a multidimensional crack in reality.  Those memories began my 'what-if' moment' planting the seed of the novel.
Now that I was on my way entering another dimension, who, what, where, and why would I find there?  The characters were slowly forming while I was struggling with an antagonist stealing scenes where I wanted a political force restraining him.  At the time, Clinton was assured of breaking the glass ceiling; the anointed woman becoming the most powerful politician in the world.  So, I created a matriarchal empire run by females.  Would females do a better job or surpass the males as powerful leaders?  Would they be more humane, more cruel, more loving, more spiteful, or more nurturing and forgiving.? That's how it all came about.  I told my friends to finish the book to see how it comes out. The reader can make up their own mind.  I did.