What should a girl do who does not have money to repay it, and she had given in charity what she possessed on behalf of the deceased owner of the company?

The girl must repent to Allah Almighty and return the money she took from the company owners without their knowledge. It is not sufficient for her to give it away as charity as long as its owners are known, for the Prophet, peace and blessings be upon him, said: "On the hand is what it took until it returns it." If she is unable now, the debt remains her responsibility until she can repay it or until the rightful owners absolve her. Her action is not justified by the son's promise to marry her or by a salary increase.