The Girl who Fell to Earth - Patricia Forde

Nobody can ever know Aria’s secret: she has human DNA. Raised on Planet Terros, Aria was taught to hate humans and their destructive ways. Now she and her father have been sent to Ireland to release a deadly virus and end the failed human experiment. Aria is shocked to discover that she is herself half human, and amazed to find that Earth-dwellers live life to the full and feel love for each other, even though they are mortal. The mission goes wrong. Everything Aria thought she knew about Earth was a lie. And now forces from her past are out to destroy her.