Cadeyrn by Hazel Hunter

A woman from the present day will do anything to escape the ordeal of medieval Scotland. But will she betray the man she loves?
Lily Stover can no longer cope. Nothing in her previous life as a chef could have prepared her for her grim new reality. Starvation, beatings, and daily terror are her routines. The only flicker of hope is the memory of the massive warrior who once fought to free her. She can still see his golden eyes glaring into hers.
War Master Cadeyrn can no longer sleep. His dreams are haunted by the lovely lass whose face silently pleads to him for help. His patrols range further and further, driven by that vision. But when he finally finds her stumbling through the forest, he embraces a future that is not what it seems.