When Caroline Lancaster and her husband, Mack, began building their new home in Dallas, she knew exactly where to start looking for furnishings and special touches: Inessa Stewart’s Antiques and Interiors. “Her quality of antiques is excellent,” Caroline says. “There’s always something new and different.” Inessa Stewart and her husband, John, own stores in Dallas, Baton Rouge, and Plano. To enter any of the three is, quite simply, to know Inessa herself. The surroundings and merchandise clearly reflect her personality and taste. Each is a haven of fine antique furniture, decorative accessories, and out-of-the-ordinary gift items. She finds most of the furniture in France on the five or six buying trips she makes each year and rounds out her inventory with other finds from Italy, Spain, Germany, Belgium, and Holland.…