Of course, I toured the Malibran museum. The subject of Malibran's sister Pauline Viardot came up and I remembered that a role in Meyerbeer's Les Hugenots was written for her. The woman in the museum said that in Baden Baden they knew only Viardot, but in Paris it was the opposite: they knew Malibran but not Viardot.
It was useful to see the death mask in 3D because it gave a better idea of what she actually looked like. In the Maria booklet Cecilia holds the death mask up to the bronze bust to show what a good likeness it is.