Woman with male harem/reverse harem
 
When Cara is taken by the shape-shifting beast men warriors of Ator, she gets hands on training in triad mating traditions.
The Furians-Dagon, Gilen, and Joar had lost all hope of a future with the destruction of their home world until they stumble across an Earth woman they rescue from their enemy. Before she can be claimed by a rival beast clan, they decide to claim her for their own and set about initiating the triad mating ritual.
 
BEASTMEN OF ATOR I: ALIEN ABDUCTION IS ALSO AVAILABLE IN EBOOK