Idk what this book is called yet but this is just random parts from it

There is a massive war between the United Confederacy Of Frenic and The Areathian Republic and Candinor, who have sent 18 year old Thalia Greyy and a strike team composed of thieves, misfits and scoundrels on a mission to assasinate the Frenic Queen. The one thing that she doesn't know is that her twin brother Fionn, who she lost in a shipwreck 9 years ago, is being recruited by the Frenics at the exact same moment.