BRUH
I think I loved it? 
Beautiful writing, really incredible portrayal of sibling love/dynamics (their love for each other is by far the most vivid and touching part). Ending made me feel horrible--like really gross and sad-- which is definitely the point. Can't help but feel a little disappointed by it though. One of my favorite things about the book was the the myth/mysticism around the house--house as at least in part metaphor for trauma, memory, abuse etc. I think in some ways I would have preferred a more ambiguous ending. But I also suspect that might be the point. Something to be said for the banality of evil or whatever. I want to recommend it because I want to talk about it but also yeah huge CW.