Vengeance born - Kylie Griffin

Annika, half-blood daughter of the Na'Reish King, longs for more
than her tormented life among her father's people. Conceived in hatred
and bred as a tool of retribution, she's gifted with a special talent
that can heal as well as destroy...

With the Na'Reish vastly outnumbering them, Kalan, a Light Blade
warrior, knows the future of humankind depends on him alone. Incursions
into human territory and raids for blood-slaves by the Na'Reish Horde
have increased. As Chosen-leader, he faces the task of stopping the
demons-and convincing the Council of aging Light Blade warriors that
change is necessary for survival.

When Annika learns Kalan is a prisoner in her father's dungeon, her
dream of escape seems within reach. She agrees to free him in exchange
for his protection once they reach human territory. Now, marked for
death for helping him, Annika must learn to trust Kalan as they face
not only the perilous journey to the border but enemies within the
Council-and discover a shocking truth that could throw the human race
into civil war...