the ending is perfectly in tune with the period of the story

I know, although if that was going to be a big problem in Edda's life, surely she wouldn't have blithely made almost instant plans to move to Vienna. There doesn't seem to be any parents or siblings here having an opinion on the subject - does Edda have a family? Did she ever tell anyone aside from the people she worked with that Bill even proposed?

Now that we know she's pregnant, she's going to be under more pressure to marry, and quickly, though.