The reason she's not qualifying for more assistance is likely the value of the assets. You mentioned two car payments. She should sell one of the cars or give it back to the bank. If she declares even jewelry or any large possessions, those are counted as liquid assets.
If she's in NC, she'll have to go in person, according to
this website.
It sounds as though she should be eligible for Emergency Assistance (which will include at least foodstamps and likely cash as well), so be sure she asks about that when she visits social services.
Feel free to PM me if I can be of any further help. I've been through most of this not long ago.