Mataji can you please tell me what are duties of a daughter towards her parents?
my humble obeisances dear Mataji,
All glories to Srila Prabhupada!
Usually daughter's duty before parents is that she remains chaste, pure girl;
And in the future becomes very nice wife to her husband, very nice mother to her kids and very nice daughter in law for husband's family members.
Parents' duty to children is to make them very good persons in the society; Devotees of Krishna;
And son's duty is to become responsible; In the future take care of his mother, younger siblings...his own family, wife, children;
But daughter's duty for her own parents is to give birth to nice kids and perform nicely her duties before her husband;
If suppose there are no any brother in the family and no responsible father (as it happens in present days) so that time daughters may take duties of father and sons. For example daughter can earn money and maintain her mother and younger siblings. But it is of course difficult situation.