While this is vaguely interesting, it is for all the wrong reasons. I suspect (and Wikipedia backs me up) that this is not an authentic diary. It just feels off somehow, something I cannot put my finger on. It's too set out with perfect data points of parental relationships, sexual awakenings, sibling rivalry, friendship issues, etc. However, it gives an insight into the social mores of the turn of the last century in a middle class society and presents a glimpse into a culture starting to crack - the servants, the antisemitism, the importance of family standing and the divide between expectations of daughters versus sons. And while the book may not be an authentic diary, there's a sense that some of those memories are probably real for the author, half remembered feelings and events of a life even earlier than the one it is meant to portray.