She finds it hard to believe it doesn't matter, and so she assumes the opposite, giving him a suspicious look. Regardless, she doesn't have the strength to argue with him right now, so she moves on.

"If you say so," she resigns with a short sigh. "I just wish..." She breaks off, attempting to school the emotion from her voice, and mostly failing. "I wish I could have done more." Besides get myself killed, she adds in her head, a defeated look clouding her features.