The Weaponsmaster

I wrote this story a while ago, so I don't remember as much about it as I would like to, but here goes: Drea lost her brother years ago, but she can't remember exactly how it happened. All she remembers is a white light and someone saving her. Now she's seventeen and trying to figure out why strange things keep happening to her. She's no hero, she couldn't even save her own brother from a terrible wolf-like monster, so why does a guy named Danny suddenly appear and tell her how special she is? Soon she figures out she's something called the Weaponsmaster, and is supposed to use her power to save everyone. Drea doesn't think she can do it, but maybe with some help things just might go her way.