The Taming of Annabelle
M.C. Beaton Audio Book

His feelings toward her were warm. She turned their conversation over and over in her mind, reading into every casual answer a double meaning, hints of a growing passion that were held in check. From the moment young Annabelle met her sister Minerva's intended, Lord Sylvester, she developed a secret passion for him that obsessed her. Now she was determined to take him away from Minerva no matter what. But she hadn't reckoned on Sylvester's best friend, Peter, who fell in love with Annabelle and decided to tame her.