The Bittlemores : a novel / Jann Arden.

On mean Harp Bittlemore's blighted farm, hidden away in the Backhills, nothing has gone right for a very long time. Crops don't grow, the pigs and chickens stay skinny and the three aged dairy cows, Berle, Crilla and Dally, are so desperate they are plotting an escape. The one thing holding them back is the thought of abandoning young Willa, the single bright point in their life since her older sister, Margaret, ran away. But Willa Bittlemore, just turning 14, is planning her own rebellion. Something doesn't add up in the story she's been told about her missing sister, and she's beginning to question if her horrible parents are even her parents at all. Just as things are really coming to a head, a bright young police officer starts investigating a cold case involving a baby stolen from a little rural hospital 28 years earlier, and Willa and the cows find out exactly how far the Bittlemores will go to protect a festering secret.