The saintess division was another crafty name made by the political class; a most basic example of weaponized language which coincidentally fooled most people.
The division, while named the saintess division, was filled with women who were anything but saints. It was simply another flashy, honorable-sounding name used to trick the peasants.
Sure, they wore shining white armour and said all the right things in public, but during variant, witch, and mage hunts, they were the furthest thing from a saint.