Born a Lady, Northern Dancer's half-sister and the last foal produced from the Native Dancer mare Natalma, was euthanized Aug. 13 because of colic. The 25-year-old daughter of Tentam resided at Elizabeth Moran's Brushwood Farm near Malvern, Pa.Born a Lady was bred in Maryland by E.P. Taylor, who also was the breeder of Northern Dancer, a champion and leading sire. Moran bought Born a Lady for $725,000 through Charlton Bloodstock Agency from Taylor's Windfields Farm at the 1982 Keeneland July yearling sale.Racing for Brushwood and trained by Woody Stephens, Born a Lady won four of a dozen races, including the 1984 Pearl Necklace Stakes, and earned $57,544 in one year of racing. As a broodmare, she produced 11 foals, six of which were winners, including stakes winner Arrowtown and stakes-placed Lady Bonanza. Her five auction yearlings averaged $349,000.