This is the first book in the series. The other two are called Woman of Sunlight and Her Secret Song.
Jo and her sisters have been living alone up on Hope Mountain their entire lives. When Dave and his family show up, Jo is going to have to choose whether to accept them into her life or listen to the fear that they'll only bring trouble.
Dave hasn't just moved his cattle up onto the mountain. Soon, his mother shows up with a chicken, his father shows up shot, and his brother escapes from a couple of murder attempts.
So many things go unresolved - the second "Bible," the future of both sisters (especially Ursula), the ranch, Wax, Mitch's past, and the parents of the sisters. All these threads get woven into the story only to be left to fray at the end.
I did enjoy the book, but the way it ended bothered me. So many subplots remain unresolved that you could make an argument that you need to read all three. You also get enough resolution of Jo's story that you could stop - as long as you didn't let yourself get too invested in the other characters. 3.5 stars.