Describe Mitch in the final scene of the play. What do you think he knows about the events since Blanche's birthday party? What makes you think this? scene eleven.

Yes, Mitch knows, and his reactions provide some fresh context - it is clear that he really did care about Blanche, and he is shamed and hurt by what transpires in this scene. He cannot bring himself to look at her, but he also can't bear to see her hurt.