When I reported this as a bug, I was told it was intended behaviour which seemed bizarre to me as surely only people who already knew a mask could be saved would bother running rather than killing them, so I’m hoping this has been reconsidered.
I have now also gone through the Auntie Ethel Arc for the first time. It makes sense what you were told. The Vettel is like a lich and you will probably meet her again in Baldur's Gate with the so-called "Sisters of the Seeing Pearl" in one way or another.
