Hearing him shout then hearing him in pain only worsened her guilt. She returned to the helicarrier and locked herself in her room. Never before had she felt much emotion besides anger and now all she felt was guilt and remorse. She cared for Tristan more than she let on. She knew that Dr. Banner could tell that she felt guilty. The two had grown close, to the point that he was the closest thing to a father she has had. That's why he came and tried to talk to her, tried to get her too sleep and eat. But all she did was sit on the ground and stare at the wall.