She resembles Sissi as much as i resemble a young Mata hari . Interesting story tho.
Here's another closeup from the book by Nellie Ryan, a governess to the children of Archduke Karl Stefan, and she dedicated her book to "the youngest daughter" of the empress, Karoline Franziska M. Zanardi Landi. Just like I thought, it was some inside job -- probably with a motive for financial gain.
I don't think she looks anything like the Empress, certainly no more resemblance than Katenka Fyodorovna to the Mata Hari,