Psi Another Day

Psi Another Day by D.R. Rosensteel
THERE'S A NEW SUPERHERO IN TOWN.
By day, I'm just another high school girl who likes lip gloss. But by night I'm a Psi Fighter—a secret guardian with a decade of training in the Mental Arts. And I'm about to test those skills in my first battle against evil.
BAD GUYS BEWARE.
When I was six, the Walpurgis Knights, our deadliest enemy, murdered my parents. The Psi Fighters put me into hiding, and all traces of my existence evaporated. Then I went through the most accelerated Psi Fighter training possible. And now I go to your school.
'CAUSE I WILL TAKE YOU OUT.
Unfortunately, so do the bad guys. My parents' killer has sent his apprentice to infiltrate the school to find me. And everyone is a potential suspect, even irresistible new kid, Egon, and my old nemesis-turned-nice-guy, Mason. Fingers crossed I find the Knight before he finds me...