I Am Homeless if this is not My Home by Lorrie Moore
I have always been a big fan of Lorrie Moore. She publishes infrequently, though. Her last book published was a best seller, A gate at the Stairs. An excellent rendition of a small town's after effects suffered after 9/11. But this book -- a zombie!!?? whose ex-husband takes her cross country??!! Horrible book, bad premise!!