The Thief's Talisman Series by Emma L. Adams

Changeling. Thief. Mortal heir in a world of treacherous immortals. Raine Warren, half-faerie changeling and master thief, wants nothing to do with the family who abandoned her in the human realm as a child. But when Faerie comes knocking, claiming she's descended from Sidhe nobility, she's handed an unexpected legacy. One catch: it comes in the form of a sceptre containing dark power coveted—and feared—by every faerie court, and no instruction manual... moreChangeling. Thief. Mortal heir in a world of treacherous immortals. Raine Warren, half-faerie changeling and master thief, wants nothing to do with the family who abandoned her in the human realm as a child. But when Faerie comes knocking, claiming she's descended from Sidhe nobility, she's handed an unexpected legacy. One catch: it comes in the form of a sceptre containing dark power coveted—and feared—by every faerie court, and no instruction manual. Now her name's on every hit list in Faerie, and the other Sidhe will do anything to take her off the playing field... permanently. Her last hope is to strike a deal with a charming thief with his own agenda and his own plans for the sceptre. On the run from assassins and hunted by the most powerful faeries in both realms, embracing the dangerous magic of Faerie might be Raine's only means of survival. less

Raine Warren, unwilling heir to the Whitefall family of the Winter Court, might have lived long enough to claim the magic she inherited, but there are others who'd like to make sure she can never use it again. With the Summer Court dangerously close to discovering her deadly secret, her only option to avoid a trial for murder is to ally with the same family who nearly killed her. Her task: find out how her all-powerful faerie mother met her mysterious death, or forfeit her life... moreRaine Warren, unwilling heir to the Whitefall family of the Winter Court, might have lived long enough to claim the magic she inherited, but there are others who'd like to make sure she can never use it again. With the Summer Court dangerously close to discovering her deadly secret, her only option to avoid a trial for murder is to ally with the same family who nearly killed her. Her task: find out how her all-powerful faerie mother met her mysterious death, or forfeit her life. Even with the help of her best friend, Viola, and a certain unreliable thief, her quest seems insurmountable. As the borderlands are threatened by a dark force, Raine finds herself caught up in a conspiracy that puts her and the people she loves in the centre of a confrontation between Faerie and their deadliest enemy. If she lives long enough to learn the truth, exile and death are the least of her worries. less

Can Raine outwit the masters of deceit? Kicked out of Faerie and on the run from the ruling Sidhe, Raine Warren is less than happy to be tasked with saving both mortal and faerie realms from an all-too-personal threat. With her surviving allies in terrible danger, it's up to Raine to devise a scheme to stop the outcast Sidhe before they obliterate the Courts and everyone inside them... moreCan Raine outwit the masters of deceit? Kicked out of Faerie and on the run from the ruling Sidhe, Raine Warren is less than happy to be tasked with saving both mortal and faerie realms from an all-too-personal threat. With her surviving allies in terrible danger, it's up to Raine to devise a scheme to stop the outcast Sidhe before they obliterate the Courts and everyone inside them. Together with Cedar, former thief and fellow exile, she must find a way to beat the Sidhe at their own games -- without her desire for retribution turning her into a queen as ruthless as the ones who covet her power. less