Following Marianna's death in 1890, it was reported in French newspapers that she had finally, on her deathbed and with Edgardo beside her, become a Christian.
Setelah Marianna wafat pada 1890, surat-surat kabar Prancis mengabarkan bahwa ia akhirnya menjadi Kristen di kasurnya dan dengan Edgardo di sampingnya.