THE ANSWER IS:
Mr. Van Daan is stealing food, thus, Mrs. Frank wants them to leave the annex.
Answer:
The Logan family and Mr. Morrison are trying to take a stand against the injustice against blacks by whites that is rapidly building up to a crisis—like the Wallace store boycott, or Mr. Morrison's violent defense of Papa.
Hopeful.
Why because Enthusiastic can be describe as eager or enjoyment, interest or approval.