Honestly she should have dealt with more dimension rulers, and more encounters that involve tricks and bargains.
That being said I think the act is kinda made out to be too easy. She is changing a mystical entity's nature, is "her pain" actually part of her essence like how Chthon changed her with his own essence. I would very much like a magic mechanic where you can essentially plant your own soul/essence like some sort of virus. Hefty price to pay but it also gets results.