Jo Hopper is sitting in her lawyers office in North Dallas, slowly, calmly telling the story of how she believes the nations largest bank tried to take away her home and her possessions, and destroy the relationship she had with her stepchildren. Her saga began eight years ago this month at Medical City Dallas. There, on January 25, 2010, Max Hopper, who had been a titan of early corporate information technology, a genius who had led the development of American Airlines AAdvantage program and its SABRE reservation system, died. Max had been in good health but suffered a stroke the day before. He was 75.