Complex sentence: When she was 13 Weltfish lost her father to whom she was very close, and encouraged by her grandmother she went to the synagogue to say the kaddish for him, a honor and responsibility traditionally reserved for a son.
Split into simpler sentences: When she was 13 Weltfish lost her father to whom she was very close. Encouraged by her grandmother she went to the synagogue to say the kaddish for him, a honor and responsibility traditionally reserved for a son.