"Do you HAVE to inject your bloody ego into this?!" Yerbol snapped, shaking off the burning sensation he was beginning to feel in the center of his chest before looking up at the seemingly haphazard pattern on the ceiling once more. She was right; the dots, the swirling patterns around the dots, the numbers...this was a map of some kind. He had heard of ancient maps buried deep in the hearts of ancient Force-user's tombs, both Jedi and Sith alike. Treasure hunters claimed that most would lead to wealth beyond measure, historians believed they contained road maps to knowledge untold and the cynics dismissed them as mere myth. Yerbol had bought more into the third perspective, but after this...well, he would need to get this to the Council. Of course, the Sith would try to stop him, but that wasn't much of a problem at this point. She was allowing her vanity to get in the way of finding a solution; she wouldn't be hard to shake. 

But would he want to abandon her? His conscience wasn't necessarily bothered by leaving his sister's murderer in the tomb where she committed the deed, but it WAS irked by the notion of abandoning a potential lead into the will of the Dark Council. It had been difficult to pin down the location of any Dark Council members before the Emperor was killed and even more so now with his death so recently reported. She could provide some valuable intelligence, yet convincing her to join him would be...a problem. A solution then sprung to mind that might prove intriguing, one that she couldn't refute. Or at least he hoped. 

"You say I won't be going anywhere, but what about we?" He turned to face her as he proposed:
"You have information I need, not to mention I want you to face justice for what you did to my sister." He took off his robe and laid it next to one of the bookshelves jammed against the wall. 
"Yet you would see me thrown to the Dark Council and they would bestow all sorts of honors upon a Sith that managed to slay two Jedi AND recover a valuable artifact. It would appear that we are at an impasse...unless you can summon up a degree of honor." He placed his lightsaber next to his robe, holding up his hands.
"We duel. Hand to hand. Last one standing takes the other to their Masters."