Another one of the final scenes (24-26, can't remember which, I did a lot of stuff, got all three I think, so I don't know which one goes where), you get from taking the Queen in the winter village's letter. Not sure how to go about that, but you can, then go to her house and talk to her. There's also an angel scene I'm pretty sure, but not entirely sure how to get that.
Oh, also, about your second spoiler question, lose to wolves. Before you do so, remove any party members you have, Patrick gets healed from sex, but party members don't. This will get you to the winter area (which you'll need to get the sex with the queen there scene)
Edit: Ah, did some testing, you get scene 20 automatically after being beaten by wolves, and 24