She's never gotten over how many of her daughters were burned in the name of her enemies. Delving into arts deep even among immortals she has absorbed the Norns, the Fates, the Furies, and the Triple Goddess of the Celts becoming a burning trinity fueled by magic and vengeance. She is the protector of people who suffer at the hands of religious extremism, but the cold, slow burning rage of centuries makes her a merciless enemy you never want to be on the opposite side of.
She is functionally the end-game goddess, and the only one you can't take on as a Patron. However in game, even outside of her level, if you lose your templar gold and happen to be at a crossroads, she will offer you a power up, but when using her power ups you will be unable to collect the templar gold without sustaining damage until it's effect wears off.
In her boss fight, she goes through a LOT of different forms from different mythologies becoming bigger and bigger until achieving her true form.