I picked up this book several weeks ago at the used bookstore, and just finished it today. I can't remember the last time a book made me cry as hard as this one did. It was slow going at first, but I really enjoyed the end.
From the back of the book: "As young women, Darla and Jo enter into an agreement that will change their lives: Joanne agrees to give birth to the child that Darla cannot have on her own. Then early on a warm July morning, Joanne, four months pregnant, suffers a devastating car accident. For the first time in memory, Darla must face the possibility of life without Jo. As Darla struggles to understand why her distressed friend was out driving in those dark morning hours, she must also fight to keep the baby that was intended to be her child."
Great book--I highly recommend it!