The Descendant: Baltin Trilogy: 1

She wants her world back; he wants her heart. Tilly Morgan and her four-legged companion Kodiak are just trying to survive the alien arrival. Two years ago the visitors unleashed devastation--a world-wide EMP followed by a deadly virus that wiped out more than half of humanity. Traversing the lonely landscape she runs into an alien on patrol with one order: eradicate all human life. A mysterious dark-haired stranger named Jareth comes to her aid and she reluctantly allows him to join her quest to find her sister. He even persuades her to let the damaged alien tag along against her better judgment. As her group travels the desolate world and inches closer to her goal shes forced to examine her unwanted feelings for Jareth and come to terms with her heart even if the truth threatens to destroy her and everything shes come to believe.