I had a similar issue (without killing Anders first). If you speak with the dead refugee, Lae'zel gets the exclamation point over her head. Interesting thing too is at this point we know they are aligned with fiends, yet if you then talk to Anders it doesn't come up and isn't noted in the quest log. But talk to Anders first and then talk with the dead, it'll add a note to your quest log who they're aligned with.
