Bloodthirsty Surgeon

In her previous life, she was a genius well-versed in both medicine and poison before a plane crash ended her life. In this life, she became a first daughter, whose younger sister just snatched her fiancé. Right after entering this world, she found herself drenched in stench and mocked by sisters. Not long ago, her fiancé slapped her in the face, and she died from knocking into a fence. Now that she's here, she won't let those bad guys have their way. Why is the stern-faced lord, AKA, Warlord Yama different from the rumors? Anyway, whoever bullies her shall die! Whoever frames her shall perish! Whoever assassinates her shall face total annihilation!