Molly schools his reaction to a person climbing out of a mass grave, alive (in a sense). His situation is highly different, but probably no less traumatic. All it really does is solidify an unpleasant connection between the two of them Molly may never speak of- crawling out of graves and realizing your previous life is gone and doesn't even matter. Molly thinks he fared better in that regard.

"Not vampires specifically. Just creatures of an undead persuasion. Things that siphon life force, and so on. You see a lot when you travel." A good answer that's truthful inasmuch as Molly can recall. "But people talk. They tell stories."