In her seventh story [The Changeling], the author appears to have lost none of her fecundity of imagination, her sensitivity, or her fluency of speech. But neither has she been able to overcome a tendency to dull the edge of her originality with some stereotyped characters and incidents…. As the girls grow into their teens, Martha becomes more relaxed and self-confident, while Ivy's calm nonconformity, creativity, and family background enrage her classmates. But now the author piles on too much; for in attempting to emphasize the girls' defiance of false teen-age standards and conventions, she introduces carefully arranged, but well-worn, contemporary situations and characters. In the end, the impact of the book is diffused.

Ethel L. Heins, "Early Fall Booklist: 'The Changeling'," in The Horn Book Magazine (copyright © 1970 by The Horn Book, Inc., Boston), Vol. XLVI, No. 5, October, 1970, p. 479.