"Should have listened to the negative reviews!"
No.
I listened to the sample, and the little I heard seemed pretty good (deer sweater story), but it turned out to be just about the only tiny piece of the book that I enjoyed. It is just rambling and self-absorbed, and she tries so hard to be funny or shocking that it ends up not working for me. I must admit I gave up one-third of the way through, and skipped forward here and there to see if things appeared to be improving, but anything I hit was only more of the same, so I just got out to cut my losses. I'm writing this to get the whole thing out of my system before starting a new book.
I don't want to be too negative here, so let's just say that the good point about it is that it is energetic.
It wasn't a problem with characters as such.
"Fascinating and original book"
This is a remarkable book. First of all, it is SF-like in creating an entirely different world, the one the boy constructs (with the aid of his mother???s explanations) to rationalize the very strange environment he finds himself in - which is not at all strange to him, as it is the only one he knows. But, much more than this, it is also an absorbing and thrilling adventure, and an impressive story of maternal love, full of emotion but not at all sentimental. A really great listen, though at first I found the high-pitched narration of the boy a bit jarring. But the story was so good that I soon got over that and was drawn in completely.