Stella died of what seemed to be a chronic illness causes prior to the beginning of the game's storyline. A flashback of her death is shown if the player goes to Bartz's old house and activates the music box on the table near the window. She speaks of her "spasms" becoming less frequent, although she still wishes Dorgann to remain at home so that the three of them can live as a family for a while. Dorgann intended to leave on another adventure despite this, but before he could, Stella suddenly collapsed and died in their home.
Early in the game, an illusion of her is used by Siren in order to steal Bartz's soul. She is unsuccessful in doing so thanks to Galuf forcing Bartz to come to his senses.