Lady of Quality by Georgette Heyer
A woman of independent means and spirit, stunning Annis Wynchwood has no yearning for wedlock, and has dashed the hopes of many lordly suitors. But never has she encountered such a rakish specimen as notorious Oliver Carleton. And when a femme comes face-to-face with a most incorrigible rogue, there ensues a tug-of-war that only love can overcome.