Linda is Daniel Weaver's ex-wife.
Linda was Captain Daniel Weaver's wife. They separated a year before the invasion, due mainly to his control and anger issues, she got engaged again some time later. At some point there was an attack in their neighborhood, her fiancé was killed during the attack, she and Jeanne were supposedly in a house down the street that got destroyed by an Airship. Weaver searched the wreckage extensively but couldn't find any trace of them and assumed they were dead. However, in What Hides Beneath, he found her glasses in his house, that hadn't been there before, it made him hopeful that his she and daughter were still alive, somewhere.(What Hides Beneath)