Thanks, guys. As with films, I like to read reviews after reading the book.
A quick google search showed many reviews; the above one that Truman posted (via Larry) is from the New York Times, and is by far the most negative one. The others are more mixed or positive, understandably expressing confusion over the lack of narrative cohesion, but generally appreciating Annie's language.
*spoiler (of sorts) below*
The "real" epilogue: Bird Cloud Ranch is now for sale and can be yours for a mere $3.7M!