A Young Girl's Diary, dat in 1919 (met een voorwoord van Sigmund Freud) werd uitgegeven. Het dagboek wordt wel toegeschreven aan ene Grete Lainer.
August 7th. There has been such a fearful row about Dora. Oswald told Father that she flirted so at the tennis court and he could not stand it. Father was in a towering rage and now we mayn't play tennis any more. What upset her more than anything was that Father said in front of me: This little chit of 14 is already encouraging people to make love to her. Her eyes were quite red and swollen and she couldn't eat anything at supper because she had such a headache!! We know all about her headaches. But I really can't see why I shouldn't go and play tennis.
August 8th. Oswald says that it wasn't the student's fault at all but only Dora's. I can quite believe that when I think of that time on the Southern Railway. Still, they won't let me play tennis any more, though I begged and begged Mother to ask Father to let me. She said it would do no good for Father was very angry and I mustn't spend whole days with the Warths any more. Whole days! I should like to know when I was a whole day there. When I went there naturally I had to stay to dinner at least. What have I got to do with Dora's love affairs? It's really too absurd. But grown-ups are always like that. When one person has done anything the others have to pay for it too.
August 9th. Thank goodness, I can play tennis once more; I begged and begged until Father let me go. Dora declares that nothing will induce her to ask! That's the old story of the fox and the grapes. She has been playing the invalid lately, won't bathe, and stays at home when she can instead of going for walks. I should like to know what's the matter with her. What I can't make out is why Father lets her do it. As for Mother, she always spoils Dora; Dora is Mother's favourite, especially when Oswald is not on hand. I can understand her making a favourite of Oswald, but not of Dora. Father always says that parents have no favourites, but treat all their children alike. That's true enough as far as Father is concerned, although Dora declares that Father makes a favourite of me; but that's only her fancy. At Christmas and other times we always get the same sort of presents, and that's the real test. Rosa Plank always gets at least three times as much as the rest of the family, that's what it is to be a favourite.