The Crystals of Belvoir

Barbara Rowett, an American tourist visiting England, did not believe in faeries, witches, or time travel until a car accident suddenly plunged her into early 19th century England. Her family, left behind in the 21st century mount a desperate attempt to retrieve her before she is stuck 180 years in the past forever. Only the loyal devotion of her children, the feckless assistance of a mischievous faerie, and her ability to rise to the challenge to save a young boy suffering from the early emergence of polio, before the medical arts of the day are capable of dealing with it, can save her.