The author's grandmother was a very religious person. What are the different ways in which we come to know this?

The author's grandmother was a very religious lady. The different ways of her behavior show this. she visited the temple every morning and read scriptures. at home she continuously recited her inaudible prayer in a sing-song manner while getting the author ready for schools hoping that he would learn it by heart. she didn't like English school as there was no teaching of God and scriptures.
                 Even while spinning at her spinning-wheel she would recite prayers. perhaps it was only once that she forgot to recite her prayers. it was in the previous evening before her death, when she felt over excited while celebrating the arrival of her grandson with songs and beatings of drum. she continued praying and telling beads of her rosary till her last breath.