Sir, I hadn't realised the plots holes that you mentioned here and honestly you are right 😭 I am also traumatised from this book, would love to join that support group.
In Sibby's prequel (Satan's Affair), I wouldn't say there's SA towards the main character? Spoiler alert: Sibby does get off on violence and killing people, and at one point grinds against a corpse, so take that as you will 😭😭 It's shorter than the other books though, a hundred and something pages, and I kind of?? enjoyed reading, despite bad writing and bad plot. As long as you don't think too much, you'll be fine-