Bloodlore - Cadis Trilogy, #1

Venn Connell swears her assassin days are over... ... Until one missing ambassador threatens Andvell's hard-won peace. Now, stuck on what was supposed to be a straightforward diplomatic mission, Venn must defend herself against a man with a relic she believed lost. And an enchanted army. And a lurking shadow that followed her out of the charred Treevale ruins. Although she longs to face the darkness with foul words and quick blades, Venn knows she must tread carefully.
One wrong step, one mistimed move, could hurl her country into war. If you love stories with fierce friendships, creative swearing, and blade-weilding women, you'll love Bloodlore. Get it now.