Goth stiefschwester wird alles tun, um aufhören zu werden, gespritzt zu werden

My annoying weird stepsister keeps complaining about my friends bothering her, but it isn't my fault. Maybe she wouldn't get bullied if she just started being normal. But she said she's gonna do something for me in exchange for telling my friends to be nice to her, maybe she can show me just how bad she wants to stop being picked on.