Blood Pack Beginning by Eve Langlais

Pack Law doesn’t apply to vampires, but Sasha is still determined to take three wolves as her mates.

Sasha lives in the shadows, emerging only to fight at the behest of her sire. But her latest assignment hits a snag in the form of a few Lycans. They aren’t the rogues she was looking for but might be the men she needs—if she can get them to heel. When they’re not howling and shedding, they’re barking at each other, trying to establish who will be her lover.
There’s big and burly Amir, who gave up everything for his family but wants to do something meaningful with his life.
Cyrus, the cynical skeptic who is leery of the tenuous alliance between vampires and Lycans.
The playful Diego who is ready to do whatever it takes to impress Sasha.
Three delectable Lycans means Sasha has some choices to make. Invest in a dog food company? Buy some flea collars? Maybe take them as her mates, so long as they understand there can only be one alpha…
Her.
However, seduction isn’t the most pressing issue at hand. The death of the trouble making Morpheus has revealed a mysterious and even more dangerous player. Lycans, even dormants, are being culled by this mysterious master and, as if she didn’t have enough on her plate, there’s reports of monsters attacking humans. Fighting ghouls is easy compared to stopping a traitor who would have their kind exposed to humanity.
Can Sasha and her Lycan allies—and lovers—stop the coming conflict before it’s too late?