Aliena is a nice person who turns out to be an alien in a human host. She just has things to learn about the human form and society. When her body starts immune-rejecting the alien brain, and the brain has to be replaced by another alien brain, maintaining the semblance of marriage and family becomes a challenge for both Aliena and the man who loves her.
Daughter of Ancients
Unconventional
The Ale Boy's Feast
First Blood
Cast in Shadow
Seasons of Z (Book 2): Dead Spring
Nightmare Planet
The Human Edge