What made the grandmother unhappy?
The main reasons for why the author's grandmother was Grandmother Was Unhappy And Disturbed Are :-
1 she couldn't teach him as the author was being taught English lessons, law of gravitation of which all grandmother was unaware.
2 she did not like the idea of learning music in the school as she considered that it was the work of prostitutes.
3 she could no more go to leave the author in the school as he used to go by a motor bus in the school..