Fighiera-Sikorska was born in Siedlce in 1929 to General Franciszek Sikorski and pianist Maria née Schmar (d. 1977).

[3] Her father ended up in the special NKVD camp for Polish POWs in Starobelsk and was shot dead with ca 3,800 inmates in spring 1940 in Kharkov as part of the massacre of nearly 22 thousand Polish officers and reservists and policeman collectively called the Katyn massacre.

In 1942 Ada, with her mother and sister, could go through Samarkand to Tehran, and then to Isfahan, where she went to the Polish school.

She graduated in Polish literature, specializing in journalism, at the University of Warsaw before starting her first job in a publishing house.

She participated in international, national and regional congresses and meetings of Esperanto as a teacher and lecturer.