Getting Some of Her Own by Gwynne Forster (Recorded Books, LLC, 2008).
I endured listening to this book through all 9 discs just to make sure the main character came to her senses in the end. She presented her problem to the reader right at the start (young, beautiful, but unable to have children) but for some unfathomable reason refused to explain it to the love of her life until disc 9. The book also featured several other characters who suffered from a stubborn unwillingness to do the obviously right thing, making the whole novel agonizing to listen to. Eventually they get a clue and learn about things like adoption and divorce (and communication). I think I confused Forster with another author whose recorded books I really liked and will have to track down.