The Fall of War — A.L. Kessler

Attacked by wolves and left in the woods, Casey has no idea how she ended up safe in the hospital, suffering only from a minor dog bite. Her worldview is forced to shift when a stranger tries to convince her that she is now a werewolf and needs the protection and guidance only he can provide. Cursed to be a werewolf, Ares hides his divinity masquerading as Kylian, the alpha of the Red River Pack of werewolves. When he finds out a rival pack is leaving a newly bitten wolf alone to deal with her first change, he has no choice but to find and protect her. But the rival pack has other plans. Can Casey and Kylian find their fate together while avoiding the threat of territory-hungry werewolves?