Having at last reread it, yes, the substrate musical is definitely Ruddigore, although I think the obviousness of this to Karr comes from her own love for it rather than any actual neon signs.
I am so glad you reminded me of this -- it is even better now than I found it in the 80s.
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Date: 2019-03-18 08:10 pm (UTC)I am so glad you reminded me of this -- it is even better now than I found it in the 80s.