What are the limits of a custodial mother's actions regarding the money paid by the father as child support after divorce, and is it permissible for her to request an increase if she dislikes the father?

The custodian must spend the money paid by the father for the maintenance of his children on their basic necessities (food, drink, clothing, housing, medical care). She is not permitted to dispose of it in a way that diminishes it, nor does she have the right to request an increase beyond what suffices the children's needs with the intention of harming the father. She is entitled to a custody fee according to the majority of scholars.