@Serenata I think she is somewhat of an outcast, her classmates are too afraid to talk to her. She became cruel because she didn't want to fulfill everyone's expectations of a beautiful-smart-kind girl, she is rather alone than put up a front and is waiting for someone to chase after her even when she is like this.
@Ho8 could be! maybe there were rumors about her or her family and people started acting cruel so she got tired of being a nice girl........... I use paypal btw hahahaha