It's so weird, I've read maybe 6 BK books and even though I always review them positively I can never remember the plots after 6 months. They're like a prismatic vapor - lovely to experience and then gone forever. The only thing I remember about this one is the red spider in a tiny hole bit she pulls out 3 separate times.
I have the same reaction to Jonathan Franzen books - like them while I'm reading them and then forget them entirely when I'm done.