I found her! The woman I wrote about as “Elder Sister” is introduced below by the Women’s March in New Jersey website:
“Legendary NJ Civil Rights icon Edith Savage-Jennings needs no introduction but she gets one anyway for her boundless contributions to a better, fairer America. Edith has been the guest to the White House under every President of the United States since Franklin Roosevelt. At age ten, she met First Lady Eleanor Roosevelt when she was selected to hand the First Lady flowers on behalf of the NJ State Federation of Colored Women’s Clubs. Although told not to speak, Savage thanked Mrs. Roosevelt which led to the two becoming pen pals for the remainder of Mrs. Roosevelt’s life. At twelve years old Edith joined the National Association for the Advancement of Colored People (NAACP.) At only 13 years old Edith helped to integrate the Capital Theater in Trenton, New Jersey when she refused to sit in the balcony which was the designated seating area for blacks. Her first job was in the sheriff’s office where she continued to speak out against discrimination. Edith Savage-Jennings has received over 100 awards and honors for her work in Civil Rights. In 2016 she was inducted into the New Jersey Women’s Hall of Fame. The city of Trenton proclaimed February 19, 2016 Edith Savage-Jennings Day.”
There are prophets among us! Picture from Wikipedia, taken one week ago in Trenton.