Thanks a lot for playing and for your feedback !
Ideally the ending could have been a boss battle instead of only a cutscene if there was a bit more time to make it (which would also have given more use to the lantern shooting mechanic). Indeed, it was supposed to tell you that you've received a piece of the painting, it's a bug that will be fixed in the post-jam version along with some other bugs.
Good point about the daughter's dialogue, it would make more sense if the intro conversation was always played when first talking to her, will fix that too!