According to her mother, Carrie Warfel hates surprises. This characteristic, plus Warfel's generosity and devotion to her family and friends, made her the perfect candidate for NBC's "Today" show competition, "Lady A. Fan Secret." Convinced she was attending a work barbecue for her husband, Warfel was shocked when the Grammy-winning country band Lady Antebellum greeted her at the pavilion in Burba Lake park Oct. 2.