The Rose in the Wheel

Constance Tyrone, the conspicuously celibate founder of the St. Catherine Society, dedicated to helping poor women, is run over by a carriage one wet November evening in 1811 London. Curiously, while one of her feet is bare, the other is shod in a clean satin slipper, despite the muddy road. Why was a gentlewoman abroad in the night? And if she died under the wheel, who bruised her neck and stole her monogrammed curcifix?