It is the story of two sisters who are opposites of each other - Peachy got pregnant and married at 20, and stayed on the family farm; while her older sister Beth chose to move to New York at 18 and live the high life. Things come to a crisis when Peachy's husband commits adultery with Beth (his first girlfriend); and Peachy takes off for New York leaving Beth to mind her family for the weekend.
I think that my biggest complaint about this story, and why it won't stick with me, is that it doesn't go anywhere. There is no character development from beginning to end; nobody learns any lessons; and, other than the implied temporary estrangement of Peachy and her husband, everyone ends up in the same situation that they started the book in.
A good read, but no depth.