For weeks, 11-year-old Azlyn Hobson buzzed with excitement for the Valentines Day dance at her Utah middle school. Two previous dances at the Laketown, Utah, school had been loads of fun, and this time she had a crush on a boy at school she hoped to dance with. On the morning of the big event, she layered a red-and-pink floral sundress over a long-sleeve T-shirt and leggings, and carefully arranged her hair.