Although no official explanation has ever been given, the book's continued unavailability appeared to stem from the author's own reported dissatisfaction with the book. As an early work, Ilsa lacks the positive themes of family, love, faith, and overcoming adversity that are so prevalent in L'Engle's later novels.
The book's continued unavailability appeared to be due to the author's own reported dissatisfaction with the book, as an early work, Ilsa lacks the positive themes of family, love, faith, and overcoming adversity that are so prevalent in L'Engle's later novels.