What should the daughter do regarding the brother who seized the first apartment, demands a double share of the second apartment, and threatens to sell it? And how should the daughter deal with her inheritance to prevent her brother from claiming it after her death?

It was incumbent upon the father to be just among his children in granting gifts. If a father gifted an apartment to his son and the son took possession of it during the father's lifetime, but did not gift the other apartment to his daughter, then the majority of scholars hold that this gift to the son is complete. As for the second apartment, whose usufruct the father gifted to his daughter during his lifetime, it returns to the heirs after the father's death. It is more proper for the son to return what he was favored with and to equalize himself with his sister. We advise the daughter to speak with her brother about being just, even if she absolves her father's responsibility, and we also advise her to forgive her father. As for the daughter's desire to gift her money to her children with the intention of depriving her brother of inheritance, this is not permissible, because the intention to harm heirs is forbidden.