The local department shall determine an amount of assistance that is sufficient, when added to all other income and support available to a recipient, to provide the recipient with a reasonable subsistence compatible with decency and health. In determining the amount of assistance, the local department shall consider the recipient’s available resources and necessary expenditures and the conditions existing for the recipient. In determining the amount of assistance, the local department shall consider support from children as a potential resource and evaluate the amount of the support and its availability to the recipient, in accordance with regulations that the Administration adopts.