She is so angry at Linda that she ultimately consents as a means of punishing the therapist who betrayed her.
We close in on them to catch the tail end of an anecdote, where Gus is telling Darla yet another embarrassing story about her step-father in his youth.
They want to take those big black cocks right up the ass! He needs to get back to work before the boss sees him.
She holds a bucket filled with cleaning supplies and looks nervous.