Her reaction is so wrong that it cuts right through Matt's pain and fatigue, her heart betraying what her voice won't. It sounds like guilt. Over not being able to save them? Or something else?

"You were there." He feels confident enough in guessing that much. She doesn't strike him as the type to blame herself for not acting if she wasn't able to. Especially if she didn't know any different, at the time. No, whatever happened to put that hiccup in her heartbeat, she was a participant in it.