Elizabeth, of course, is much too young to be an 'older sailor' -- and she's not really a sailor, besides. That doesn't mean she doesn't know where they are, or that she isn't uneasy about it. Captain Sumner (god rest his soul) always steered well clear of these waters, and she always trusted his judgment.
Well. In things nautical, she'll amend in the privacy of her own mind. There were many, many other subjects they clashed on with a frequency.