He finished the rest of his beer, staring into the empty glass, nodding as she spoke. "I know, no one can, it seems, and it's a bit late to do anything about it." He sighed.

At her question, Mark looked up a little surprised by the slight change of subject. Setting the glass back down, he rubbed his hand over his stubble. "Sure she does. It was one of the first things I told her about me, and she's the one who keeps me trying to believe that I'll find a cure."