Dictated surrender to Tarth.  Immediately after the surrender is accepted in diplo screen, camera moved to Lady Tarth in an undiscovered region of the map.  She was flagged as immobile for 1 turn.  The fog of war did not dissipate around her.  After I started next turn, Lady Tarth is nowhere to be found in my settlements.

Will send out scout to general region of her last appearance, but I thought she'd relocate to a city, like any other champion after they've been defeated.

From error log:

Debug Message: Unit Lady Irane traded from Kingdom of Tarth to Empire of Resoln.
Debug Message: WARNING: CDynasty leaked dynasty member Lady Irane: 1 Refs
Debug Message: Killing Player 3
Debug Message: UpdateHUDTextureForCity - could not find the city HUD for city with ID: 6
DebugMessage: WARNING: Player - Unit Ralle Langet is marked as destroyed but still in its list.
DebugMessage: WARNING: Player - Unit Scout is marked as destroyed but still in its list.
DebugMessage: WARNING: Player - Unit UIfnir is marked as destroyed but still in its list.
DebugMessage: WARNING: Player - Unit Joffery is marked as destroyed but still in its list.
DebugMessage: WARNING: Player - Unit City Militia is marked as destroyed but still in its list.
DebugMessage: WARNING: Player - Unit City Militia is marked as destroyed but still in its list.
DebugMessage: WARNING: Player - Unit City Militia is marked as destroyed but still in its list.
DebugMessage: WARNING: Player - Unit Militia is marked as destroyed but still in its list.
DebugMessage: WARNING: Player - Unit Caravan is marked as destroyed but still in its list.
Debug Message: WARNING: DoUnitAnimation_Death: No death animations found for unit: Caravan Defaulting to regular idle
Debug Message: WARNING: DoUnitAnimation_Death: No death animations found for unit: Caravan Defaulting to regular idle