Just here to add an interesting point on the tochacha thing. The story appears on page 257 of the biography of Rebbetzin Kanievsky. In a nutshell: a baalas teshuva who frequented the Kanievsky home would come to help clean up on Shabbos, including washing dishes which were not needed for use on Shabbos. A grandson noticed and mentioned this to Rebbetzin Kanievsky, who responded that the woman is very sensitive and that she would try to explain it to her over the following few weeks. Someone asked Rav Chaim about this and he responded that the Rebbetzin knew what she was doing and would find a way to tell her the correct Halacha.
Carry on.