How does Fanny exhibit strength of character in the conclusion of the play, Watch on the Rhine?

Fanny's strength of character, like David's, emerges most clearly at the end of the play when Teck tries to blackmail Kurt. First, she offers to give Teck money so that he will leave Kurt alone. Later, like her son, she must face the fact that Kurt has just committed murder. Initially shocked, she soon composes herself and tells Kurt that he has her blessing. She also gives him the money she had planned to give Teck and tells him to use it for the cause. Her show of courage, along with the recognition of the same quality in her son, helps strengthen the bond she has with David. After the two have made a commitment to help Kurt, David warns her, "We are going to be in for trouble." Fanny, however, insists, "We will manage. I'm not put together with flour paste. And neither are you. I am happy to learn."