I Love to Hate You: Revenge has never tasted so sweet… (Marry in Haste Collection Book 1) by Elizabeth Keysian

Never get caught in a trap of your own making. Miss Athene Hartville must marry quickly, before her inheritance runs out. When her flirtatious chaperone secures an invitation to spend the week with an eccentric duke and his guests, Athene’s hopes of finding a rich husband soar. Until, that is, her childhood nemesis Viscount Rushbourne, arrives. He threatens to trample her ambitions into the dust. Struggling to manage his ailing father, a maverick younger brother, and an unwieldy earldom, Rushbourne’s reunion with the fiery Athene is a welcome distraction. Then he uncovers a conspiracy against him that could lead to his total ruin. His only hope is to win Athene’s heart…but can he pay the price and accept her bitter revenge?