Beauty and the Alien Beast by Sedona Venez

After being abducted from Earth by alien slavers, Ella is rescued by a hot alien warrior who flees with her into the hostile wilderness of his home planet. While he seems to want to protect her, the inability to communicate with her savior leaves Ella uncertain about where they stand and how she will manage to get home.

Teken, an alpha wolf-shifter from the Gladiator Wulfaen race, was on a mission to find evidence against the alien slavers to shut them down for good when he saw Ella and realized she was his one true mate.

With a language barrier and with slavers chasing them across the planet, the pair must survive not only their enemies but also the sizzling attraction between them.