Ruling on taking money from the state in the event of early retirement

She took aid coupons because she needed them, but she gave false information about her father’s salary

She gave her zakaah to her father for five years; she did not know that what she was doing was wrong. What should she do?

When watching something to remove najaasah (impurity), is it stipulated to wash it a certain number of times in order to purify it?