Is a mother considered unjust to her children if she gifts some of her daughters with her gold to the exclusion of others, or if she divides the gold equally among her daughters to the exclusion of her sons, especially with objections from the male children and one of the daughters regarding the method of distributing the gifts?

A mother gifting gold to one of her daughters to the exclusion of others is an act of injustice in gifting. Similarly, gifting gold to daughters without giving sons what would achieve fairness is also unjust. Justice in gifting is obligatory according to our view. If injustice occurs from the mother, she should be advised gently and kindly, especially since the obligation of justice in gifting is not a matter of consensus among jurists; it is a matter of ijtihad (definition) (independent reasoning).