Shortly after meeting her, Grace reveals herself to be a survivor of the atomic bombing of New York City, an event which has left her deeply disturbed. She has burn scars covering her arms and attributes her survival of the incident to her being underground at the time
After the Nazis' occupation of the US, Grace and the rest of the free African American people join the American Resistance to fight the Nazi's who are cooperating with the KKK as well as other white supremacists in the US to oppress all African-American people and place them in concentration camps, as well as reintroducing slavery to the US
She also has a daughter simply named "Little Abby (Abigail)," who she had with Super Spesh, another member of the resistance. Before meeting with B.J. she used the Empire State Building as a base of operations, also housing other members of the Black Revolutionary Front