The full film is rated PG-13 for mature thematic elements (child prodigy pressure, some mild language). It is safe for tweens and teens, but younger children might find the emotional fights boring.

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This decision alerts Frank’s mother, Evelyn Adler (Lindsay Duncan). A wealthy and formidable woman, Evelyn has been searching for Mary, believing Frank is squandering the child's potential. Evelyn arrives and demands that Mary be sent to a prestigious school for gifted children and live with her to focus entirely on mathematics.

as Mary Adler: The brilliant and spirited child prodigy.

Mary Adler was seven years old when she first stood in front of a chalkboard and saw the universe in a way most adults never would. While her peers were learning basic addition, Mary was quietly unraveling the Navier-Stokes equations, her small hand moving with a precision that defied her age. She lived in a sun-drenched house in Florida with her uncle, Frank, a man who fixed boat engines and preferred the quiet hum of the ocean to the noise of the world. Frank had promised Mary’s mother, a brilliant mathematician who had taken her own life, that he would give Mary a "normal" life—one filled with dirty fingernails, broken crayons, and real friends.

The character of Frank's mentor, Eclipse, represents the wise and experienced guide, who helps Frank to understand and control his powers. Eclipse's character serves as a symbol for the importance of guidance and mentorship in the development of gifted individuals.