A reader might interpret this allusion to 'Scrooge' as Miranda being frugal and not spending her money, even when she started making significant profits in her business, similar to the character Scrooge from Charles Dickens' novel "A Christmas Carol" who was known for his extreme stinginess and reluctance to part with his wealth. The mention of earning large profits juxtaposed with saving money like Scrooge indicates Miranda's determination to be financially cautious and not indulge in extravagant spending.
