This is a point, were we playing Fate, that I would ask the player (1) "why did you pick this as your Trouble, if you didn't want to see it regularly come up into play?" (2) "how did you envision this Trouble would work out in play for your character?" and (3) "would you like to take the opportunity now to change your character's Trouble?" In Fate a character's Troubles can (and are even encouraged to) change. If a character's trouble involves their long lost brother, to borrow from a discussion from another heated thread, then that may Trouble will naturally change once that brother is found, whether they are living or dead.