I Grabbed an Egg and Became the Villainess?

[Transmigration + System + Period Novel] After losing her job, Lin Mingyue goes looking for work and ends up at the Transmigration Bureau, where she becomes an NPC. To win a ten-million-yuan bonus, she transmigrates into a period novel as a sharp-tongued village girl, a supporting villainess meant to contrast with the heroine. The System tells her: Earn points by doing nasty things, then shop to your heart's content. Lin Mingyue looks at the earthen bed, the outdoor toilet, and the cornmeal gruel, then checks the System's prices: ten jin of rice for just one point, a roast duck combo for just three... She goes straight on the attack! Her third brother steals her eggs? She berates him until he cries. Her second brother says she's too unpleasant to marry? She roasts him in front of everyone until he shuts down. Her mother says her brothers matter more? She clings to her waist and cries until her mother questions her own life. The System keeps flashing alerts: Villainy +2, +1, +10...