Cassius ignored the others before walking over to Lian.
"Something troubling you...?" He whispered trying to take into the consideration of others based on feeling and less risk of killing his companions. 

Something about her seemed like she dislike others. Perhaps it with just [i]ol'One arm,[/i]to even just emotional duress, but this was just based on his observation.  "I won't pry if you don't want me to. But I rather know concerns of who I'm working with." 
He sat down next to her seeing as two people out of the group saw him as sketchy. But he could hardly blame them either.