Is it obligatory for a mother to be equitable among her daughters in the distribution of gifts presented to them, and do the two sisters have the right to demand that of her?

The jewelry gifted to each daughter at her birth is her property, and the mother may not dispose of it except with the permission of the father or guardian. If the mother disposes of her daughters' jewelry by selling it and buying what suits them, this must be done with the father's permission, and she must purchase for each daughter with the price of her sold jewelry. The mother is not obligated to equalize among the daughters in the additional money she spends to buy jewelry, because this falls under the category of expenses, and justice in this regard is achieved by giving each child what they need.