What caused the quarrel between Anne and her mother on 2^nd April, 1943?

2^nd April, 1943 was termed as a “black mark” in Anne Frank’s diary. This is because she had a fight with her mother. That night when her mother asked her if she could say her prayers with Anne, Anne refused. This initiated the quarrel between Anne and her mother.

Her mother was sad and hurt because Anne refused the prayer together. On the other hand, Anne too was sad and hurt because she had to refuse her mother for prayer. So she writes-

“ It is hard to speak the truth, and yet it I the truth; she herself has pushed me away, her tactless and her crude jokes which I don’t find at all funny, have now made me insensitive to any love from her side”

This means that she was very upset with her mother’s behavior and that made her refuse the prayer together with her mother.