The Secret by Beverly Lewis

If you like books that deal with Amish then you will enjoy most books by Beverly Lewis.  This book is no exception.  Grace is hoping that her beau will ask her to marry him soon.  She is older than most girls at this stage of the game.  Her mother has been acting mighty strange lately and her Grandmother and Grandfather have been kinda secretive.  Heather is a young woman who has just found out some devasting news both about her health and her fiance.  This is part of a series and is continued in The Missing.