Winter Born by Kate Denver

In a world of magic and danger, Aurora and Eli, the male who raised her, journey from Quartaine to Quartaine, never staying long enough to be noticed. But when three hooded figures arrive at their doorstep, their peaceful existence is shattered. Eli’s past has finally caught up with them, and Aurora is forced into the Guild, home of ruthless assassins, tricky thieves, and secret-keeping spies. Aurora must fight to survive while struggling to hold onto her own sense of morality.
Meanwhile, trained to lure, seduce, kill, and steal. Asher’s life has been bathed in deception and blood. Raised within the Guild, his life was not only owned by them but tainted and molded to be the best weapon in their arsenal. Dealing with the hurt of his mentor’s betrayal and being replaced, a life-altering change turns Asher’s whole world upside down. Answers must be found and quickly because the Guild doesn’t stand for their belongings being taken away.