She starts as self-deprecating and blames herself for events beyond her control, relying on others, but she wants the power to summon eidolons so she can better defend her kingdom and her companions. Through Zidane's influence, Garnet learns to act in a more commonplace way, and endeavors to "blend in". She changes her speech patterns from overly formal to more casual, and as Zidane teaches her more about the outside world, she falls in love with him.

Garnet can be naive due to her sheltered childhood, for example, she is shocked at some of the more unwholesome sights at Treno. Garnet is quick-thinking and finds ways to outwit others to pursue her goals, and eventually matures into a more assertive individual who realizes that past does not need to constrain how she lives her life in the present.