Nothing but the Wolf in Me by Nikki Clarke

Valeena is on the run. Except she’s not running anymore. She’s managed to do the impossible, escape from her sociopath brother and hide away on the outskirts of a nice, sleepy mountain town.
It’s just her, her kinda-neighbor, Bob (not his real name because she doesn’t do names), and the small arsenal she keeps stashed in her cabin, just in case. That is until one snowy night an injured dog (wolf?) finds its way to her front porch offering companionship, an uncanny knack for being able to unlock and relock doors, and a habit of disappearing.
Even more unexpected is the intense, insanely hot dude who shows up claiming ownership of her new puppy only to sweep her into the kind of passion she thought had no place in her life. He also brings his own secrets, a hint to her lineage, and a demand that she trust him to keep her safe.