Mihelič's first novels "Obraz v zrcalu" (Face in the Mirror) (1941) and "Tiha Voda" (Quiet Waters) (1942) are descriptions of life in the comfortable world and aristocratic atmosphere of family traditions where a culture of fairly earnt wealth, respect and pride prevails. She then soon discovered her own personal view of the descriptive world of literature in which she juxtaposes respect with irony, enthusiasm with repulsion, class allegiance with attempts to escape from it etc. Her characters are torn between traditions, respect, controlling their feelings on the one side and lust and ambition on the other with love, intrigue, political power and wealthy playing a key role. A special place in given to the emancipated and independent modern woman rebelling against the traditional devoted role of women of her mother and grandmother's generation in favour of emotional fulfilment, though this does not necessarily mean the idealisation of women. An example of this is the heroine of her 1959 novel "April", taking place in the first months of the Second World War. In "Stolpnica osamelih žensk" (1969) and "Vrnite se, sinovi" (1972) she further develops the irony in her descriptions of characters and gestures. "Tujec v Emoni" (1978) and "Cesta dveh cesarsjev" (1981) are historical novels about intrigues in ancient Emona and a love story at the time of the Congress of Laibach respectively. Her final novel "Ure mojih dni" (1985) is a memoir. She also wrote novels for younger readers such as "Pridi, moj mili Ariel" (1965) and "Puhkova kresna noč" (1972).