Do daughters sin by demanding their inheritance after the father's death, if the mother and brothers refuse reconciliation with them unless they return what they have taken from it?

Upon the passing of your father, his property became a right for all his heirs after the settlement of debts and bequests. No one has the right to prevent you from claiming your share of the inheritance. Your mother's and siblings' prevention of your right is clear injustice. However, this does not justify mistreating your mother, failing in your dutifulness to her, or severing ties with your siblings. You must be dutiful to your mother and maintain kinship ties, even if they cut you off, for the Prophet, peace and blessings be upon him, said: "The one who maintains ties of kinship is not the one who reciprocates, but the one who, when his ties of kinship are cut off, maintains them." And he said: "If you are as you say, then it is as if you are feeding them hot ashes." You are not obligated to obey your mother in waiving your right to the inheritance, and there is no sin upon you for not obeying. However, if waiving it for her benefit and does not harm you, then it is preferable to waive it to gain her satisfaction.