A Curse Dark as Gold by Elizabeth Bunch

The legend of Rumplestiltskin comes alive again in this gripping family saga of the Millers of Stirwaters.  The hard-working Miller family has run the wollen mill which provides the village's livelihood for generations, barely managing to pay expenses and earn a living for the family.  The superstitions of the local folk hint at a curse on the mill which causes one disaster after another.  When Charlotte and her sister Rosellen inherit the mill after their father's death, they discover the mill was secretly mortgaged to a local bank, and only the late night miracle from a man who turns straw into gold can save them from closing the mill or selling out to competitors.