Success or Death.

Among those who served her closest, concern had hardened into a determination to carry on into the future ahead. While none had clear answers as to what happened to her, and some still sought for a way to find her in life or death, they all knew that her vision to preserve the Sith Empire into eternity could not be weakened by her absence.
That was why Darth Raust was on Korriban in the weeks after the Test of Strength.
They had to teach the new generation of Sith how to fight, and how to defend themselves effectively against their most deadly opponents. Through his research, he had found that one apprentice has garnered much of their former master's attention: One

The ancestral graveyard and trial ground for Sith.
There, at the top of the ancient, carved stairs, the Quarren overseer meditated under the pale sun, feeling the chill of the dark side settle into his very bones.
In front of him, his lightsabre floated in the air, turning slowly as if caught in a bubble of neutralised gravity.
Behind him were simply crumbled ruins, but ahead of him were the weatherworn statues of sith lords past, and their ancient tombs since buried, discovered, reburied and rediscovered again ad infinitum. The structures of the Sith of old stood in defiance against the wind and sand that sought to wear them down, and where one monument had toppled, another was built. The Empire had uncovered and rebuilt many a thing here, patching the orange sand with black metal slabs and spires.