Dreams: Part Two by Jayne Ann Krentz

The warrior died at her feet, his blood running out of the cave entrance and mingling with the waterfall. With his last breath he cursed the woman -- told her that her spirit would remain chained in the cave forever until a child was created and born there...So goes the ancient legend of the Chained Lady and the curse that bound her throughout the ages -- until destiny brings Diana Prentice and Colby Savagar together. Suddenly, they are both haunted by dreams that link past and present, while their waking hours are filled with danger. But it is only when Colby, Diana's modern-day warrior, learns to love can these dark forces be vanquished. Only then can Diana set the Chained Lady free.