A shame, Ibis thought to himself, she was so powerful. All that power... wasted. He had stopped trying to control his apprentice's mind the moment he realized how vulnerable it made him. He thought it was a shame that he had to dispose of her apprentice the hard way, but he would do anything necessary to remove another bond in his life.
Realizing how these foolish emotions and attachments have taken over him, he decided to recite the Sith code.
Peace is a lie; there is only passion.
Through passion, I gain strength.
Through strength, I gain power.
Through power, I gain victory.
Through victory, my chains are broken.
The Force shall free me.
He then smiled, a vicious smile as he stepped out of the door and killed the slave that awaited him outside. He went to the landing pad of the building he has stayed in, then set the ship he came in alight.
"May this be my promise", he shouted to all those who can hear, directing a bit of it to his apprentice using the Force, "I will hunt you down, Perdante. And when I do, you will regret turning on me!"
OMNIA MUTANTUR NIHIL INTERIT.