Margaret Kilgallen nació el 28 de octubre de 1967 en Washington, Distrito de Columbia, EE.UU.. Estuvo casada con Barry McGee. Murió el 26 de junio de 2001 en San Francisco, California, Estados Unidos.
She was diagnosed with breast cancer after she was pregnant and opted to forgo chemotherapy so that she might carry her pregnancy to term. Gave birth to her only child, a daughter Asha McGee on June 7, 2001, with her now widowed husband Barry McGee and died 3 weeks later on June 26th from complications from breast cancer at the age of 33.