For the 1848 London run of Les Huguenots, Meyerbeer transposed the role of the page "Urbain" 'from soprano to contralto and composed the aria "Non! Out of deference to her master, she also accepted to resume her singing career mainly in order to tour the orchestral version of the Petite messe solennelle around Europe.
Rossini had once expressed his hope that she would take upon herself to perform it when he was dead.
He had said that he had composed it, and especially the new section "O salutaris", just having her voice in mind.
Her wish, however, never came true and she was just given the chance of being present at the exhumation ceremony in Paris.
The Paris correspondent of the Rome newspaper Il Fanfulla wrote on the occasion: "photographers snapped in the same shot the greatest performer of Cenerentola and Semiramide, and what is left of the man who wrote these masterpieces".
In 1877 she had remarried—to a French military officer named Charles Zieger.
She died at Ville-d'Avray, near Paris, in her "Villa La Cenerentola", and was buried at Père Lachaise Cemetery.
Always engaged in charity (often in memory of Maestro Rossini), she left nearly all her estate to the poor of Paris.