The Talking Eggs, by Robert San SouciSteiner Books
Rose, the oldest sister, is rude, cruel, and demands to have her way all the time. She refuses to do housework or care for her mother. But gentle Blanche gladly does what she is told and tries her best to be kind to others. When Blanche meets an old woman with supernatural abilities, her life changes, and the discovery of a chicken house of talking eggs filled with treasures of gold, jewels, silver, and fine dresses changes it even more. But what will become of the greedy Rose?