My mother recited Tibetan scriptures for my grandmother for seven days, but she still dreamed about her. Didn't she say that she would "never see again" after reciting them? Isn't that enough?
It shows that grandma has benefited, which depends on the effect of reciting, and she can surpass it with a pure heart. Our hearts are unclean, but reading the classics has merit. Therefore, we should persist in studying for a long time, with lighter karma and gradually clean heart. That will be great power. This classic is very good. Keep reading and reciting as much as possible, because our bad karma is endless, so the karma is deep and our hearts are not clean. Reading more books and reciting more can make your heart clean.