Loving the Lion by Marie Mason

Bachar considered his word the ultimate authority—until a curvy woman shows up on his mountain demanding that he find her brother. A brother that has no business being in shifter territory. The alpha lion doesn’t have time for this. His second-in-command is AWOL, his chief of security is acting strange and a group of humans is stirring up trouble.
Nope, an opinionated, obstinate woman is the last thing this alpha shifter needs—until his lion catches her scent. How long will it take this alpha male to realize she’s not only just what he and his animal need, she’s what they crave.