The Memory Police

I really wanted to like this book more than I did. The concept was unlike anything I had read before but I feel it fell flat and maybe that was the point. Towards the end I found it confusing, the memories that disappeared, where they now physically manifesting to where those who remembered were forgetting too or did R just leave her body in the secret room? Was the novel she was writing the actual story? I'm okay with a book ending without answering all my questions, but I'm left not understanding what I read.