She at first resumed her teaching career, working in a private gymnasium run by her aunts, Leokadia and Bronislawa Kosmowska, and continued writing novels.

[2] Young Polish widows at the time were expected to remarry, but Krajewska defied both the social norm and her parents' wishes.

[3] Krajewska passed her final exams in 1891 and received an award for her doctoral dissertation the following year,[2] but found that she could not obtain the nostrification of her diploma or practice medicine in her homeland.

[1] It thus did not take her much thought to respond to the notice of the Austro-Hungarian authorities, who were looking for female physicians to work in the newly occupied Bosnia and Herzegovina.

[2] Teodora Krajewska was named the public health official (Amtärztin) of the District of Tuzla with the rank of captain by the decree of 28 November 1892.

She usually rode a Bosnian pony on her visits to remote mountain villages but had to travel by foot when the winters were too severe for the horse.

[2] Speaking at the 1896 International Congress of Women in Berlin, Krajewska defended colonialism by arguing that Bosnians and Herzegovinians needed "civilization and progress from the outside", imposed "from above".

She published a detailed article about it in 1900, claiming, on the basis of only 50 cases, that the disorder was endemic among Muslim women living in the mountains of Tuzla District.

[3] As the public health official of the District of Sarajevo, she regularly traveled to the towns of Foča, Fojnica, Goražde, Vareš, and Visoko.

[2] She also formed friendships with native Bosnians, favoring Croats but also including "progressive Muslims"; she disliked Serbs due to their perceived Russophilia.

[1] The First World War, triggered by the assassination of Archduke Franz Ferdinand several hundred meters away from Krajewska's home in Sarajevo in 1914, ended the Austro-Hungarian rule in Bosnia and Herzegovina.

While the majority of the upper class Poles in Bosnia and Herzegovina moved to the newly established Second Polish Republic, Krajewska stayed.

Reports of her colleagues in Bosnia and Herzegovina, including Bohuslava Kecková, contradicted Krajewska's writings and denied the correlation between religious affiliation and intelligence.