Revenge of the middle-aged woman

The best thing about this book is the
title. Middle-aged woman is abandoned
by her husband for m-a-w's (very youthful)
assistant. I missed the revenge
of the title. Don't waste your time.

I did not expect to like this book, but I really did. The main character deals with her husband's betrayal with more class than I would be able to muster. A quick and enjoyable read.