Atticus’s Angel by Pearl Tate

Atticus:
As the medical doctor on the Discovery, I’m exposed to the human females regularly. In addition to monitoring their health, I’ve documented and logged all the mating changes.
Of course, I long for a mate of my own. But I can’t imagine it’ll happen before I’m obligated to return and complete my family commitment.
Many of the males on the Discovery have similar family agreements, so imagine our surprise when mating marks appear on all of us—all at once!

Ashlyn:
My entire life is controlled by my mother and the genetic disease I was born with that robs me of so much, including the ability to have a baby. As if the special schools and special classes weren’t enough, now my mother is considering a special home!
So, when I’m offered another life—one that sounds too good to be true—I jump at the chance to be healed and have a family.
Of course, no one mentioned the danger. Someone isn’t happy about the Earth women. They’re discovering spies who not only plan to report back to their planet, but also have orders to kill us all…