Davor by Leslie Chase

A woman lost among the stars
Helen Maxwell hasn’t been having a good day. Taking part in a scientific test was supposed to be a chance to be part of something new and to make a little money, but instead Dr. Hughes’ experimental teleporter sent her headlong into danger.
Trapped on another world and captured by the Fire Wolves, a Clan of alien barbarians, she doesn’t know what to do. She wants nothing more than to escape, but that seems impossible – until she meets another prisoner who might be able to help. The only problem: once she’s met him, she isn’t sure she can bear to leave him behind.

An alien warrior protecting his people
Davor is a warrior, held captive as a hostage against his own Clan and doing his best to protect his fellow prisoners. He’s given up hope of escape, but when he meets Helen everything is thrown into chaos. The curvy human woman is his mate and he will not allow anyone to harm her, no matter the consequences. He’d risk anything for her safety and her freedom.
When their captors put a plan into motion that will doom Davor’s Clan, the wolf-shifter has to choose between his family and his happiness. Can he stay with Helen and protect his Clan from the Fire Wolves? Or will his duty to his people tear them apart?