At the quest point when you return to the vampire castle after you sent the moth priest there, the vampire Hestla spawns dead on the left side of the main table.
I've looked her up in the wiki and apparently she's the castle's blacksmith. I've reloaded previous saves and before the quest point above she's never to be found, but when I get to that point the questline: *poof* there is her corpse

This happen to anyone else?