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Her love of puzzles leads her to collect any that Hershel Layton and Phoenix Wright may have missed or been unable to solve during their time in the town, allowing them to solve them at a later time.
Her Japanese first name, "Nazomi", is derived from the word "nazo", (謎), meaning "puzzle". Her full name contains the word "misuteri", meaning "mystery" (Nazomi Suteria).
"Ridelle Mystere", her full English name, is a play on "riddle" and "mystery", respectively. Her surname may also be a reference to "St. Mystere", the setting for the first game in the Professor Layton series. In addition, Dewey addresses her as "Miss Mystere", which may be a play on "missed mystery", in reference to her position as puzzle keeper.
Her full French name, "Amy Stère", is a play on "a mystery"; to emphasize this, she is also often referred to as "Miss Stère".
Her German name, "Grätsel Büchner", consists of the words "rätsel" (riddle) and "bücher" (books).
Her full Spanish name, "Mysteria Enigma", is a play on "mysterious enigma" (an "enigma" being something puzzling or mysterious).
Her full Italian name, "Miss Terry", is another play on "mystery".