Richard Gudenkauf walked his daughter down the aisle in September 1996 with a frown on his face.The bride, Bernadette, was a vision in her white dress and matching pearls, big doe eyes peering out from behind her veil. Her mother, Laura Gudenkauf, watched her daughter glowing, happy to finally be marrying the man she had met years earlier during a theater production at church.From the start, Richard had a bad feeling about the groom, David Vande…