Under the Ember Star. Charles Allen Gramlich

Ginn Hollis was fourteen when her father's mysterious death left her alone on the planet Kelmer. She's grown up since then. Kelmer is a harsh world, an old world: its people are ancient, its civilization long fallen and dimly dreaming under a brown dwarf sun the natives call the Ember Star. But now, long dormant forces are beginning to stir on Kelmer, forces that could destroy the planet forever…or bring it back to life. One being stands at the center of the turmoil. His origins are veiled, his destiny is unclear. Everyone wants a piece of him. Only Ginn Hollis can protect him from both sides–if she can save herself first.... Another grand science-fantasy adventure by a riveting storyteller!