Disclaimer: Tolkien knew of such things – Kortirion only imagines.
It was the one thing they’d left unspoken, the one thing neither had chosen to admit might happen. It was almost foolish how they had avoided speaking of it when to others it was an event of no little consequence. Gandalf knew the danger, Master Elrond might have foreseen it, and chose to ignore the possibility for the sake of his daughter. Why had the two of them refused to speak about this one thing?
Now there were too few words; it had all happened so quickly, so suddenly... neither had been prepared for this one unexpected... event