On scene 3 of Act 2, Mr. Frank says, "We don't need the Nacie to destory us. We're destroying ourselves." How are the behaviour of Mrs. Frank, Mr. Van Daan and Mr. Dussel destructive?

Anne finally comes to the conclusion that Mr. Van Dan is temperamental and easily causes arguments, especially with his wife. This gives some pretty bad energy in the annex. Mr. Dussel shares a room with ann, he is argumentative, controlling and not very clean. Anne's mother is very critical of Ann. All of this causes conflict and tension in the annex.