[So, she does know about the gems. Where they are right now is something that he'll get to, but the likelihood that she's somehow tied to the first theft increases with every additional piece of information. It's frustrating, not to simply get the entire story, but Viktor is smart. He can piece enough together.]

Do you think I wanted to build mining equipment? The gemstones are what's revolutionary. [The mining equipment was simply what he thought would get past the Council. Foolish, all of it. He knows that now. Knows that his work is dangerous in the wrong hands. How could they have anticipated the break-in? That someone would kill enforcers to get to their lab? Viktor resents the implication that somehow he allowed all of this to happen.] We fought, Jayce and I. It was our last conversation, before I arrived here. He wanted to explore the possibility of Hextech defenses--weaponry--and I refused.

[It sounds like she and Jayce, together, crossed that line.]

I don't know anything about a hammer.