Sarah's Death and the Misunderstanding of Pachad Yitzchok

Rabbi Zweig addresses a deeply troubling Baal HaTurim on Parshas Chayei Sarah that has bothered him for over twenty years. The Torah (תורה) states "livchosah" (to cry for her) with a small chaf, and the Baal HaTurim explains that Avrohom only cried a little because Sarah brought her death upon herself by saying "yishpot Hashem (ה׳) beini u'veinech" (let God judge between me and you). The Baal HaTurim goes further, stating that one who commits suicide (ha'ma'abed atzmo ladas) doesn't receive a proper hesped. This presents multiple difficulties: How could Sarah, described by Chazal as an "egla temimah" (perfectly righteous) and "k'bas chaf l'cheit" (sinless), be considered both a sinner and a suicide? How does this reconcile with the principle that everyone dies due to sin (ein misah belo chet), which would make everyone a suicide? The shiur begins by examining a parallel case in Parshas Vayeira with Hagar and Yishmael. When Yishmael is dying of thirst, Hagar throws him under a bush and runs away "ki amra al ereh b'mos hayeled" (for she said, I cannot see the child die). She distances herself far enough that she cannot see him—two arrow-shots away. Yet the Torah then says "vateshev mineged" again, suggesting she moved even further. Rabbi Zweig initially explained this as a difference between Jewish and non-Jewish mothers, contrasting Hagar with the Shunammite woman in the haftarah who held her dying child. However, he now finds this explanation unsatisfactory—how could Avrohom remarry such a woman who abandoned her dying child?