With her is Rachel Nassif, day center director at the PACE Organization of Rhode Island in East Providence. She found a place to live, through what might seem like an unlikely source — a health care nonprofit, the PACE Organization of Rhode Island. PACE stands for Program of All-Inclusive Care for the Elderly, and the organizations aim to keep frail older people in their homes. “But they are.”Kriss Auger, social work and behavioral health manager at the PACE Organization of Rhode Island, outside the organization’s van. Housing and medical careRabinovitz had worked as a senior credit analyst for a health care company, but now her only income is her Social Security check.