Lẫm was born on April 20th, 1949. Lẫm's father was Lê and her mother was Ngọc Phạm thị. Her paternal grandparents were Huệ and Khuyến Nguyễn. She had two brothers and three sisters, named Lãnh, Liễm, Liễu, Lĩnh-Hồng and Lương. She had three half-brothers and a half-sister, named Liêu, Lôi, Lung and La.