Ivy - The Montgomery Sisters, book 3

Ivy Montgomery is tired of her sister's constant nagging and protectiveness. Blind, she decides to escape in the middle of the night when she is captured and brought far from home. With no understanding of the outside world, Ivy must use her keen abilities to navigate the wilderness around her. Anger and hopelessness are her only defenses against the things she cannot do. Until she meets a strong-minded Lakota Chief, who will not let her cower to the blindness any longer.
Lakota Sioux Chief of the Paha Sapa, Hotah is on a hunt for his brother, Kangi. Cast from their tribe five years before, Kangi has grown a dark spirit and a hatred for all white people. Now on reserved land, Hotah makes a deal with the General to capture his brother in return for his people to have the provisions they need. After rescuing Ivy, he promises to take her home, but danger is near and Hotah soon realizes it is not just his brother he should fear.