Book 1 in The Dissension Process series (paperback).
 
Nobody said coping with depression would ever be an easy process.

Jamie is far from the average teenager - among a small fraction of London's population in possession of an extraordinary ability of unknown origins, her extremely powerful and unique gift sets her above the rest of her kind. Driven by her loneliness and a deeply traumatic past, she combats any empowered dissenter she comes across in the hope of distracting herself from her suffering, to little avail.

The mysterious boy.

Jamie then encounters Jesse - an enigmatic youth with powers very similar to her own who is able to hold her to a rare stalemate before fleeing. Fascinated by the young man, Jamie obsessively tries to hunt him down once again to learn more of his capabilities.

Actions have consequences...

But in the midst of her search, the troubled girl begins to attract the wrong kind of attention with her super-powered escapades while also having to deal with a dark reminder of her unfortunate young life.