Crown of One Hundred Kings by Rachel Higginson

A lost princess…
Tessana Allisand had a family once. A home. A title. A future. Until one night when everything she loved was taken from her. Secreted away to an isolated monastery in the farthest region of the realm, Tess was raised in the silence of monks and the loneliness of tragedy. And there she would have stayed if the dark magic that killed her family hadn’t finally found her.

An impossible quest…
With her identity discovered, Tessana must face the home she fled all those years ago. The Crown of Nine must return to its rightful place and Tess must be the one to carry it across the nine kingdoms. And when she arrives? She’ll need to convince a dying kingdom that the crown that has belonged to one hundred kings should be given to a queen.

A rebellious prince…
Taelon Treskinat was in love once. With a princess. The daughter of a slaughtered king. He risked everything to save her, to make sure she survived. When that same princess tumbles back into his life no longer the scared little girl he remembers from childhood, he must decide where his duty lies. With the girl that will threaten everything he knows and loves. Or the kingdom he will do anything to protect.