Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Why isn't this author a best seller?

Why isn't this author a best seller? She's certainly a best writer. Her people, with their entirely original characteristics, behave in unusual but believable ways, and her delicate touch, her subtle wit, her surprising story all gripped me long after I was supposed to be asleep. There's important sex and a shocking death and a lingering mystery. This book has everything.