Help my disabled family

I'm a 16 year old autistic girl, I live with my disabled grandparents, one of which is a veteran, and my mother who has chronic seizures and schizophrenia. Up until recently, another family member was living with us and working two jobs to help us pay rent. That person has now moved out (despite their promise to continue financial aid till our lease was up.) We need money for rent and food. At this rate we will be evicted and homeless. We've gotten so broke, we've tried selling jewelry and other items from our house just to put food on the table. Please help us pay this months rent