Thunder in the Heart — Amy J. Fetzer

PASSION SWEPT HER FROM THE ELEGANT SALONS AND
GLITTERING BALLROOMS OF THE NATION'S CAPITAL...
The daughter of an army colonel, Sable Cavanaugh led a gay life of preening, pampering and parties. But the celebrated Washington beauty was forced to leave her safe, secure world behind when she agreed to take part in a desperate deception. Now, disguised as a Sioux woman, she embarked on a perilous journey...

...TO THE OUTER LIMITS OF THE UNTAMED FRONTIER
Only one man had the courage to guide her through the savage western wilderness: Hunter McCracken, the virile trapper who shocked Sable's girlish sensibilities even as his sensual caresses stirred her woman's heart. A man haunted by shadowy secrets, Hunter would bind her to him with a fierce, fiery passion that defied the darkest danger -- and a love stronger than destiny itself....