This quest is not available in game.
Return to Ironforge and speak with King Magni Bronzebeard.
Thaurissan was a great and honorable dwarf. You ruined my life and the life of my unborn child!
<You think that Princess Bronzebeard may still be suffering from the residual effect of the Emperor's spell.>
Return to Ironforge and tell my father that the heir to the Kingdom of Ironforge will be a Dark Iron dwarf.
Whether he approves or not, it shall be.