. The book I’m looking for is a YA diary-type novel. I think the main character is named Sarah or Sara. She has an older sister named Deirdre (called Didi). I remember the cover is a girl with brown hair wearing I think a white t-shirt. She is sitting in a purple background. I don’t remember much about the plot except she doesn’t get along with her family and there is a line something like, “You can tell what their expectations were, naming her Deirdre, and me, just plain Sarah.” It was definitely from the early to mid 1970s. Solved by an Anonymous Lost Classics Reader: Diary of a Frantic Kid Sister by Hila Colman….. there was also a sequel, Nobody has to be a Kid Forever.