Rider's Revenge - The Rider's Revenge Trilogy, #1

She chose the path of revenge. But is she strong enough to survive it? "Rider's Revenge is a fast-moving epic, featuring a heroine that's bravely thrown herself into unimaginable peril...for fans of Trudi Canavan's Black Magician trilogy, Kristen Britain's Green Rider series, Rachel Hartman's Seraphina." K'lrsa wiped the last of the tears from her face. The time for crying was past. She was a Rider and she had a mission to accomplish. She stood over her father's body, a chill breeze pebbling her skin, and sliced open her palm with the knife, mingling her blood with her father's.
She let the blood drip onto his body and then onto the desert sands as she held her head high and shouted into the night, "I, K'lrsa dan V'na of the White Horse Tribe do swear in the name of the Great Father, Bringer of Light, Bringer of Life, Scourge, and Destroyer, and on my father's everlasting soul, that I will avenge him. I will kill the man responsible for his death and I will destroy the Toreem Daliphate." She took a deep breath.
"This I swear, by my own blood. I forsake all other vows. I forsake all other ties." She was no longer a Rider. No longer a member of her tribe. Now she was just the woman who would avenge her father. As K'lrsa wiped the knife clean on her pants, the desert sands swallowed her father's body, leaving no sign he'd ever been there. The desert had heard her vow and accepted it.