Arden's Mate Armageddon Mates Book 4

This is a re-release
Remy, a young woman with the ability to harness fire, finds herself helping a group of werewolf shifters and other paranormal beings in a battle against demons who want to take over the world. When she is badly injured and on the brink of death, Arden, a werewolf shifter, bites her, giving her supernatural healing abilities. The last thing she expected was for it to also mark her as his mate. With her choices for her life slowly disappearing as it becomes clear what being with Arden will entail, Remy flees.

Arden is devastated when his mate runs from him. Hope for his future disappears and his wolf takes over, turning him into a feral mess.

Remy soon realizes she's made the biggest mistake of her life. Returning to the shifters and a changed Arden, Remy has to not only gain their forgiveness but also build their trust in her while helping Arden overcome his feral nature.