I don't know why the bridal skeleton should have been so terrifying to Julia, but I don't know that it matters. The Dream Curse dream was not supposed to be about reason; it was supposed to be about unreasoning terror. Still, I wonder. What memories or fears of Julia's might Cassandra have been using?
I have real issues with the idea that Lang never wrote down anywhere what he told the tape recorder. It is completely different from anything that he had led Barnabas to expect. I know that Lang was a mad scientist so that anything was possible, but this "If both live" business came right out of the blue.
Gotta love Mrs. Johnson - both because she's funny, and also because she manages to get Lang killed.