Primal Eclipse by Stan C. Smith

Ember only wanted to live a full life. That’s why she went into stasis, to wait for a cure for her terminal disease. Now she and five other people awaken in a spacecraft, far from Earth. Hundreds of years have passed. Everyone Ember knew is long dead. And what’s worse—far, far worse—humanity is all but extinct. Ember and the others discover they were selected for a monumentally important mission: find a suitable terraformed planet for human civilization to start over. They land on Tenoth, a seemingly hospitable world, but soon find themselves in a nightmare of deception and danger. As eclipses bring deadly darkness, the team races against time to secure a future for the remnants of humanity.