Birth Of An Archangel

The Bible has always said that there are and always will be FOUR Archangels. Michael, Lucifer, Raphael and Gabriel.
But... What if there was another Archangel?
Created before even Michael, she raised her brothers and fought the war, getting locked away as a result of pushing back Amara.
Eons later, a threat rises up as she is freed and it's up to the only female archangel to team up with a duo of Hunters and an angel in a trenchcoat, all the while trying find her brothers.