The Nazis are sending hundreds of Jews to concentration camps. Hundreds of families are going into hiding. Annes family has to stay in the Annexe for years thanks to this problem.
The members of the Secret Annex have a rat infestation. They worry the rats will cause enough clatter they may be found. They have to get cats just kill all the rats.
Anne takes all the jokes her mother makes bout her, and tries to deal with it. She then can't take it any more, and she finally snaps. Her mother becomes shocked by what Anne says. She then begins to feel really bad.