For two and a half decades she has been managing the exhibition activities of the Kosovel Centre in Sežana as a freelancer and collaborated with various galleries in Slovenia and abroad, including the Turnac Gallery in Novi Vinodolski (Croatia), the Pavelhaus Gallery (Austria), the Ars Gallery in Gorizia (Italy), and has presented Slovenian artists on several occasions in Rome, Vienna, Brussels, and London.

[2] Šajn has been involved in the formation of the Casoria International Contemporary Art Museum in Naples with a selection of Slovenian artists.

[3] In 2008, Šajn presented ten Slovenian painters in the Stedelijk Museum Amsterdam and Galerie Pand Paulus in Schiedam.

[4] In addition to reviews, she has also prepared monographs on a number of national and international authors (Nikolaj Mašukov,[5] Adel Seyoun,[6] Azad Karim,[7] Eduard Belsky[8]).

In 2021, she prepared a monograph for Sonja Tavčar Skaberne,[9] and in 2022 for Konrad Kranjc[10] and Gregor Pratneker.