Wow, that sounds intense. I wasn't familiar with this book, but the premise of starting the year right on New Year's with such a tragedy is chilling. I was really struck by what you said about the lack of answers. Sometimes, as readers, we want to know the exact "why" to put our minds at ease, but you're absolutely right: in real life, grief is like that—messy, confusing, and often without closure.
Thanks for the trigger warnings; it definitely seems like a book that needs to be read at the right emotional state. Cheers!