[The Middle Sister is the] story of a girl's discovery that although she could not follow in the footsteps of her older sister, she was a person in her own right with her own beauty, talent, and integrity. The characters are alive and also very pleasant to know, and while the outcome of events is never surprising, the old theme is handled so exceptionally well that interest never lags.

Ruth Hill Viguers, in her review of "The Middle Sister," in The Horn Book Magazine (copyright, 1960, by the Horn Book, Inc., Boston), Vol. XXXVI. No. 5, October, 1960, p. 408.