That Tsubaki girl, unless magically corrected by this manga, would realistically speaking be dead 10 or at most 20 years later. As a cocaine addict. She's not merely a person overly stressed by the Japanese ultra competitive education system and seeking some quick relief by bullying others. She's psychologically a goner already. Since she doesn't seem interested in simply killing herself, she will most definitely go for drugs. Perhaps her mighty father will bribe someone to take her as a wife, but it'd be a 100% guaranteed fake marriage where she would be sitting home alone abusing substances and the husband would be with his real lover elsewhere. Occasionally she might try to cause a public scandal for the family, but that's it.