Phoenix Down by Bethany Shaw

Nova’s family expects her to fail, and she’s determined to prove them wrong. Her first mission isn’t going to plan, though. Her ship has crashed and she’s the only survivor. Now, she must convince the handsome human that she means him no harm and is there to help him.
James doesn’t believe his eyes when he witnesses an alien attack in his backwater town. After watching one of his neighbor’s be obliterated by one of the invaders, he comes to the rescue of an injured young woman. He rushes the unconscious beauty back to his farm where he and his niece tend to her.

When she awakens, he realizes there is something about her that isn’t quite human. Can he and his niece trust the enchanting alien?