Who is Lucie Cormery or Catherine Cormery from The First Man and what is their importance?

Lucie Cormery, also known as Catherine Cormery, is the partially deaf and mute mother of Jacques and widow of Henri. Lucie is a maid or house worker who lives in extreme poverty. She has a hard life, since her husband is dead. She must work all day and take care of two children. She is a quiet woman and does not strongly discipline her children, leaving her mother to whip the children when they are bad. As an older woman, Lucie is fearful, refusing to leave her neighborhood in Algiers. She becomes especially fearful when bombs explode on the street where she lives.