Cynthia was born with the ability to control four elements - fire, water, wind and earth.
And it was because of this she was often given special treatment in class as teenagers which often meant that the lower ranking students would resent her.
Jamie was the exact opposite of Cynthia. Popular, attractive at the time, and a scorer on the lower end of the class.
And she often lead the bullying force against Cynthia. It was nothing much, just mildly annoying like rearranging her things, changing the position of her desk and stuff like that.
Until one day, they went a little bit further and poured a little water on her books.
Cynthia blew up quite literally as flames roared from her body as she beat up her bullies including her former best friend and stormed off.
But that only invited a flame in Jamie as she swore to get her revenge and later that might, she snuck into the school to trash the things Cynthia left overnight.