What are three important events or details in section four of Anne Frank: The Diary of a Young Girl?December 6, 1943 - March 31, 1944

This section of the diary is more focused on moods and emotions as there isn't a lot of different action to report.

On January 6th, Anne finally decides to act on her longing for a friend to confide in (outside of the diary).  She goes to Peter Van Daan and begins a friendship.  In the next several entries, she's very aware of the fact that he is male and she is female, but she emphasizes that her friendship with him is only because he is what is available (if the Van Daans had had a daughter, she would have been just as happy to start a friendship with her instead).  The two begin to grow closer, naturally, and eventually Anne admits she is "pretty near to being in love with him."

There is more discussion of an invasion of Europe by the Allies, which those in the Annex hear through their "protectors" and by listening to the BBC.  Anne is annoyed at the adults treating her, Margot and Peter like children when it comes to such subjects.

The only other interesting piece of "action" from this section is that there is a burglary in the office downstairs, but those in hiding are less fearful of it than they would have been before.  Anne has admitted, also in this section, that she has assumed an attitude of apathy over whether she will live or die.