Did the waxworks proprietor's daughter play multiple roles?

I have looked at the IMDb description and cast list of Waxworks. It says that the actor who plays the writer (William Dieterle) also plays the baker in one segment and the bridegroom in another. It also says that both the writer and the daughter of the proprietor are caught up in the fantasy, which may imply that the actress who played the daughter also plays the baker's wife and the bride in the Harun and Ivan segments. I understand the reasoning, especially given the one scene where the camera melts away the writer's face and the baker's face appears. Yet there are two loose ends.

First, the IMDb cast listing claims multiple roles for Dieterle, but does not mention multiple roles for the actress who plays the daughter.

Second, I don't see a close resemblance between the actress who plays the daughter and the actress(es) who play the other parts. (For that matter, I don't see a close resemblance between the writer and the baker and groom.) Does anyone out there know for sure if the proprietor's daughter is supposed to be the other two characters as well? (And can anyone confirm that the writer is the baker and the groom?) After all, the fact that the writer and daughter are imagining themselves to be characters in the stories doesn't prove that the same actors are playing the roles. If anyone has looked closely at the actors, or has read any literature about this, let me know.

Thanks.