This article deals with a relatively not-too-well-known text by Karol Irzykowski, composed of fragments of the writer's diary devoted to the sickness and death of his five-year-old daughter Basia. Irzykowski took down his notes as things went on, trying his best at possibly most sincerely evidencing individual phases of that traumatic experience as well as his own feelings triggered by it. The authoress analyses Irzykowski's notes in a gender perspective, asking questions on cultural conditioning of mourning. She moreover juxtaposes these with 'Pałuba', the novel published dozen-or-so years earlier, in which the themes of illness, death and mourning take an essential part. To the scholar's mind, Irzykowski - although driven he was by an imperative of sincerity - was experiencing the events related to the loss of his little girl in a manner resembling that of a scenario projected for a novel's purposes.