After Dressing up as the Wronged Female Chief, I Relied on Chemicals to Dominate

A female doctor of modern chemistry once transformed into an unlucky female chief in a remote mountain tribe who was forced to "inherit" a group of old, weak, sick and disabled people. She used her knowledge of chemistry to easily handle things that others couldn't handle; the "waste" that others looked down upon were all her teammates who would dominate the world in the future.