What is the main conflict in A Thousand Acres by Jane Smiley?

Written in 1991, A Thousand Acres is a Pulitzer Prize-winning novel by author Jane Smiley. A film adaptation was released in 1997 starring Michelle Pfeiffer and Jessica Lange. The story takes place in a small farming town in 1979 Iowa and centers around the Cook family. The aging father of three daughters decides to hand his farm over to their care. However, things go wrong quickly as the father comes to believe the eldest two daughters is swindling him out of his money and his life. The story focuses on the events spinning out of control and how the events affect the lives of the Cook family. The story is told from the point of view of the oldest daughter, Virginia “Ginny” Cook.