Founder of the El Hilo de Ariadna publishing company, together with Leandro Pinkler; this company came about after publishing Carl Gustav Jung’s Red Book, a book that had not been translated into Spanish and whose publishing rights for the Spanish-speaking world were purchased by the company. She has also been the head of the Literature Department at the Buenos Aires Museum of Latin American Art (MALBA) since 2001. Costantini was one of the creators, together with Pablo Braun, of the Fundación Filba, an International Literature Festival in Buenos Aires which, over the years, has brought together the literary world’s many actors and agents: publishers, writers, press and readers.