As a mage character I honestly didn't have too much issue. The trick to combat in this game in general is just raising your spirit as much as humanly possible, I think the max is like 15? (It's what I have.) So yeah couple that would 500 Arousal/Energy and you're pretty much set to do it, keep some anti hypnosis stuff handy if you're weak to it. Electrify stun, Arousero spam.
So I have to have these traits to beat her? How do I get the Demon Slayer, the arasoero and the electricity spell, and how do I level up the spirit? Electricity has what effect on it? Because I used analysis on her and she is only sensitive to the sacred and vulnerable to sleep, you can't do it vaginally, anal or cause pain and she has resistance to negative effects, charm, aphrodisiac etc.
Well for the demon layer talk to the girl in the church after some Time spend with her she'll Ask you some question and if answer correct she teach you the demon layer who's strenght depend from virility and you Can also have some perma perks by donating at some point a voice will talk to you and give you multiple option from perma perks to object the spirit im at 9 with only perks and item idk how some reach 15