Another thing that stopped me and made me think was the word "read" that the boy used. I felt that the sentence had the subtext that not only did my mother not like when the boy was angry, but she also didn't like (and probably was angry with him) when the teacher wrote to her that the boy was angry in class - I had the feeling that the mother is trying to teach the boy that he should not be angry at school. This pleased me, because parents don't always have such an approach these days.
I felt that the sentence had the subtext that not only did my mother not like when the boy was angry, but she also didn't like (and probably was angry with him) when the teacher wrote to her that the boy was angry in class - I had the feeling that the mother is trying to teach the boy that he should not be angry at school.