A dispute over whether a terminally ill woman should have been given tea and toast or an orange apparently upset her husband so much that he shot and killed two of her sisters and his own son before killing himself. Darlene Gilkey, 59, who is dying of cancer, saw the shootings from a hospital bed in her living room in Logan, the Hocking County sheriff, Lanny North, said Tuesday. The woman’s son, Ralph Sowers III, said his stepfather, Paul Gilkey, spared him because he had children. After the shootings Monday, Mr. Gilkey, 63, sat down in a chair on his porch and shot himself to death, the sheriff said. Killed inside the home were Barbara Mohler, 70, and Dorothy Cherry, 63, and Mr. Gilkey’s son, Leroy Gilkey, 38. Sheriff North said an argument ensued when some of the victims had apparently served Ms. Gilkey tea and toast after Paul Gilkey had already peeled an orange for her.