Broken Wings (Starfire Angels: Dark Angel Chronicles Book 2)
One soldier of the Shirat Empire came to Earth for Raea's Starfire shard and failed.
Aware of the possibility of another attack, Raea trains to use the shard's power to protect it while preparing to graduate from high school. But she discovers that the Keeper training her has betrayed her trust and now she must decide where her heart belongs. She never imagined that would mean a universe apart.