Malvina Garrigues-Schnorr von Carolsfeld (1825-1904); Portuguese soprano who created the role of Isolde in Wagner’s “Tristan und Isolde” at the Munich Hofoper on June 10, 1865.
The dedication is to her cousin Felice, dated 16 December 1865 and signed by her as Malvina Schnorr von Carolsfeld, gebürtig (born) Garrigues.. I thank Josef Hasmueller for his attempt to decipher her difficult handwriting. The dedication might be read as follows:

Meinem lieben Felice ........
Mit herzlichem Gruß und Segen
Von seiner ihn herzlich liebenden
Tante
Malvina Schnorr von Carolsfeld
geb. Garrigues

16/12 65