 Critical reception for "Fragile Eternity" was mixed to positive, with RT Book Reviews giving it four and a half stars, saying "It's a keeper".Kirkus Reviews said that the book was mediocre and repetitive, but that it would "fly off library and bookstore shelves".Booklist stated that the book was "Slim on plot and heavy with Aislinn’s inner conflict, this will nevertheless be popular with fans of the series".