A cousin of Frank Tregear, with whom she was in love. Since they were both poor, they agreed to part and to seek advantageous marriages. Frank soon courted Lady Mary Palliser and won her love. Lady Mabel half-heartedly schemed to marry Lord Silverbridge, but not until he was engaged to Isabel Boncassen did she really exert her wiles to capture him. It was then too late, and she retired to the gloomy country house at Grex, an embittered woman.