Basically her father was a high-rank priest of the main church (aka this world's equivalent of the Catholic church) and, I don't remember for sure, but if I'm not wrong, the novel describes her as having white hair and red irises, she had a very good life as a noble, but then there was a political intrigue in the church and her family was dragged in without wanting to, then the pope or some other priest used her appearance to accuse her family of heresy or that she was a demon in disguise, something along those lines and her father and mother were killed by the command of the church with only her escaping, and because of that she began to hate the church, the goddess and its followers, then believers of Solomon approached her, made her hate even more the goddess and used her, that's where we are right now