Shades of Vengeance by Heather Renee

Harper Gibbons only wants one thing: justice for her family who was killed by a group of rogue wolves. As she digs deeper, she’s told she will need the new territory alpha to assist her with the mission, but he’s been dodging her attempts at contact and her patience has run out.
Aiden Anders just lost his father and has taken over their pack while also being named interim-territory alpha. He thought he was prepared, but as more disasters keep happening around their pack, he quickly realizes his previous alpha training only scratched the surface. When a hot-headed female shows up at his pack demanding help, he wants nothing more than to send her away, but his wolf has other plans.
Together, Harper and Aiden will learn they have more in common than they realize and need to figure out how to work together for both their benefits. That is, if they don’t kill each other first.