Bodyguard (Shifters Unbound #2.5)

Elizabeth Chapman is saved from an armed robber by a giant Kodiak bear who shifts into a large, well-muscled, and fully bare human. But when it's revealed that the robber is the brother of a dangerous criminal, Elizabeth finds herself the target of a vendetta. 

Ronan, the Bear Shifter, takes her to Shiftertown, where she finds that mateless Ronan takes care of Shifters who have no families or clans of their own. Having grown up in foster care herself, Elizabeth can only admire how protective Ronan is, even while she chafes at the confinement. 

But Ronan will only let her leave the safety of Shiftertown if he becomes her 24/7 bodyguard. Elizabeth finally agrees. The trouble is, the sassy human Elizabeth is triggering Ronan's long-buried need to find himself a mate.