Margaret Mullin was a Human female who resided in San Francisco. At one point she had an apartment on Westgate Avenue.
In 2136, she met Jonathan Archer while he was at Starfleet Flight School. The night before his graduation, Archer asked her to marry him, but she turned him down, saying she did not wish to become "a Starfleet widow." She felt just too damn sexy to be strung down by a dead guy. (ENT: "Twilight")