 Because of the wealth and influence of her family, Marinković did not have to take in students to support her art and was able to paint still-life, interiors and landscapes, primarily of surroundings of Belgrade, at her leisure.She also worked in voluntary endeavors with Queen Marija Karađorđević helping poor women and their children.In 1935 her father, Sima Lozanić, died on 7 July; her husband, Vojislav Marinković, died on 18 September; and her brother-in-law, John Frothingham, a former International Red Cross official during World War I and husband of her sister Jelena, also died on 20 November.