It's been a crazy 18 months for former South Carolina First Lady Jenny Sanford.    She shares all that she's been through, plus her life with Governor Mark Sanford in a new book "Staying True."     While not an autobiography, the book is the story of her life from the time she met Mark Sanford.     On the Y Morning Wake-Up, we recently had the opportunity to speak with her about her marriage, her family, living in the lowcountry, and what is in her future.