How does the author use foreshadowing in The Great White Hope?

In Act I, Scene VII, Mrs. Jefferson reminiscences about the way that Jack has always lived according to his own mind, heart, and desires regardless of how hard she tried to convince him it was dangerous. Her memories simultaneously reiterate previous developments in the play's theme and foreshadow both Jack's planning to escape jail and his speech to the Pastor, with memory, action, and conversation combining to reinforce the thematically relevant idea that Jack lives according to his own drives and desires, as well as his own personal sense of integrity.