first of all jealousy of her own sister and the teacher because of the relationship that they had not to mention she was already a spoiled brat to boot
Proffesor created a monstet.. Unconsciously.
i forgot to mention that her mom is just as nuts as she is seeing as how she witnessed her killing her own sister and did nothing about it
Right, mother is crazy.. It is said to be hereditary.
The action in itself was immoral and criminal, no wonder Hee didn't grow a conscience.
normal kid turns into psycho path just for Professor, her shit is real. （￣へ￣）
She was just a normal kid, what happened to her that turned her to the crazy bitch she is now?? ┗( T﹏T )┛