But you know, in the end it's kinda sad. The father never actually cared. She got charmed by magic. And the only reason they won is because of the various items granted - even finding dirt on him was useless. The only consolation in a pathetic way is kinda, maybe, sort of, nightmare ancestor threatening to blow away the place.
What I'm saying is, they got lucky, that's it. No skill, no preparation, just god damn lucky.