Who is Josephine/The Admiral's Wife/The Woman with Brocade from Einstein's Dreams and what is their importance?

Josephine is the admiral's wife. She is one member of the group of four, who vacation at St. Moritz once per year in the dream where things pass slowly. In the dream, Josephine makes the same comments every year, and is uncomfortable with changes, particularly the idea that sleeping with hee head under a sheet will keep out the draft.