Stepmother

 Misook Shin is a evil and wicked stepmother. She abused and bullied her stepdaughter Soojin. She also allowed Soojin to be sexually assaulted by her father. She forced Soojin to dress weird and be bullied by her classmates. She also assumed that Soojin was reading High School fics simply because the book had her word High on the title, when it was not a high school fic and was about the lives of twin sisters.