Petsali was born in Athens. She studied painting in Athens School of Fine Arts (1978-1983) under Dimitris Mitaras, Giorgos Mavroides and Nikos Kessanlis workshops. She continued her studies in painting in the École Nationale D’ Art Decoratif (ENSAD) in Paris under Lapouzade.
After her return in Greece she followed the stage design section of School of Fine Arts under Vassilis Vassiliades. She was a teacher in schools and in Halkidas workshop with Hariklia Mitara.
She has presented her work in three solo exhibitions and has participated in many group exhibitions in Greece and abroad. Many of her works belong to private collections.
She lives and works in Athens.