I'm afraid the jury's still out on that one.
Charlotte is a unit and summonable vision in Final Fantasy Brave Exvius. She is one of the six heroes in Trials of Mana and its 2020 remake. She is obtainable via the collaboration event with the Mana series.
A half-elfin cleric from the Holy City of Wendel, Charlotte lives in the Temple of Light, under the care of her grandfather the Priest of Light and his closest disciple Heath, whom she views as an older brother. She is haunted by dreams of the family she lost when she awakens one morning to see Heath sent to investigate bizarre happenings in nearby Astoria. Sensing an ill omen, Charlotte leaves the temple under cover of night to go after Heath. The following morning, Charlotte witnesses Heath abducted by a jester whose ends are unknown. As Charlotte journeys to rescue Heath, she discovers the workings of a plot to seize mana power and joins with other heroes to protect the Tree of Mana from harm.
Uniquely among the six heroes, Charlotte has aged slowly due to her elfin blood. Her age is given as 15, but she appears as a girl of six and has a pronounced speech impediment.