The Royal Regret: She is the Miracle Doctor

Margaret was betrayed by her fiancé and illegitimate sister, jumping off a cliff to her death. A divine physician and poison master from the 21st century reincarnates into her body, vowing revenge to tear the scumbag and vile woman apart for her! The world mocks her as a rejected woman whose engagement was called off, yet she rises forcefully. When suitors come one after another, the domineering imperial uncle declares: "Who dares to covet my woman?"