Well, my estimation of Lottie as a Solver just took a leap from “fanciful” to “legit”. Apologies all, for my lack of faith.

And that means that we might not find a clue about this doppleganger in the archives after all. Alas.

But now that this jewel heist story has been dropped, and is the link between her face and Miyamoto, then I think we might have found a clue to the origin of our villainess.