Echoes of Fire by Suzanne Wright

They may not be made for each other, but animal instincts are impossible to ignore.
Madisyn Drake is a rare breed of cat shifter…a loner, unpredictably wild, and emotionally distant. A recent betrayal has left her ready to sharpen her claws on the next man she sees…until a prowling wolf with steel-gray eyes and a brooding dark edge challenges her distrust. No matter how fully he satisfies her touch-hunger, Madisyn’s not ready to open up again, even if it is oh so gratifying.
Bracken Slater has earned his reputation as an indomitable predator. Once broken by grief and guilt, he is feeling alive again, thanks to the heady scent of this independent feline. Madisyn isn’t interested in joining an unfamiliar pack, so convincing her that they’re meant for each other is going to take more than branding her beautiful neck. But when threats from both their pasts take shape, their unexpected destiny may be the only thing that can save them.