Morgan's Choice. Morgan Selwood, #1

When Morgan Selwood's spaceship is stranded in unknown space, survival comes at a price. Rescued by humanoid aliens, she quickly discovers that her unusual appearance and extraordinary technical abilities make her her valuable. Too valuable. Everyone wants her. There's Admiral Ashkar Ravindra, autocratic, dangerous, and impossible to ignore, who press-gangs her into helping fight a shadowy threat from the stars.
And there are the freedom fighters, who believe she's a legend returned, destined to help them throw off the yoke of oppression. Morgan doesn't much care which side claims her, until the uprising turns violent and atrocities begin. As civil war spreads across the planet, the shadowy threat reveals itself as an implacable killer bent on destroying all intelligent life. Caught between war, extinction, and a man she never meant to trust, Morgan must decide how far she's willing to go.
To save Ravindra and his people, she'll need every part of her bio-engineered intelligence. And the courage to risk her heart as well as her life.