So, first it's not a bad book. It's not really a good book either. The writing style leaves a little something to be desired, and while there are events in the book, it also feels like very little happens at all. It's also very clearly written by a man in the way you cannot ignore. For some reason, during just the first 6 chapters (and these are short chapters) he makes sure to mention nipples at least 3 or 4 times as just a focus.
The mother feels a little vilified in some instances, bodies are constantly being described in one way or another. Including the two underage childen. Nothing explicit there but it's certainly not the most comfortable. The 16 year old son has a few paragraphs where he goes into a bit of detail of a special folder in his phone, and the 13 year old girl is body shamed some. The end also leaves much to be desired and you don't really get a lot of answers about what's going on outside of a few details the characters will never know.
If you want to read it, definitely either get it on sale or through your library.