Princess Grace of Earth (The Zerot Infestation Book 1)



https://www.amazon.com/dp/B074Y86F5R     

Fleeing the threat of civil war on her home world and a planetary genocide game played by an ancient and evil race, Princess Grace and her small band of refugees seek sanctuary on distant Earth. 
But their peaceful existence is shattered when one of her own betrays them. 
With Earth hanging in the balance, an unlikely hero comes forward to challenge the impossible odds.