Doctor Reborn as a Peasant Girl? Time to Get Rich

One moment she was the most brilliant doctor of the 23rd century. The next, she woke up as a starving peasant girl in a backwards mountain village in a completely different world. Her grandmother is vicious and heartless; her aunt is harsh and calculating. And the rest of the family? They only show up when they need something. With nothing but her medical expertise and zero patience for freeloaders, she starts from scratch — growing herbs, treating patients, and building a life on her own terms. Grandma needs money for medicine? Cousin needs cash for his wedding? Little cousin wants funding for the imperial exams? Get lost. All of you. — Description from novelcodex.org