Is a girl obligated to obey her father in abandoning the niqab and settling for a modest hijab, given his rejection of the niqab and his view of it as extremism, and the statement by some scholars that it is not obligatory but rather a supererogatory act, and that obedience to the father takes precedence, citing Hadiths that describe a woman's face? And are studying or attending Quranic learning sessions considered necessities that permit going out? And when is going out considered a necessity? And is obedience to parents by accompanying them to mixed-gender places obligatory?