Help me find this book. Historical romance. Set during the 1800’s (?), newly married couple come home to their estate and the husbands stepmother (who is in love with her stepson), is really a witch and puts the new bride into a deep sleep and sends her soul back to 1700 England during the time of the plague into the body of a young dying woman. The young bride must find her way back to the one she loves, but the only way to do so is to become a witch herself.