I'm currently fighting the Maid of Windmere and she's ridiculously hard because she summons a dozen things to fight alongside her. Since I've tried to kill her about 30 times now, I think I'd like to be done with it and just move on. The best way I can think to do this is to change the difficulty (don't judge me). However, there's a problem: I can't find it. I've checked the options menu both in and out of game and I don't see a way to do it.
How do I change the difficulty in KoA?