Help Identifying Opera Singer Autograph

[Roberta2017]

I picked up a used book (opera book) and inside was a torn out page from a La Scala program of Fedora.
It appears to be signed. I cannot figure out who the signature is...except it's not Domingo or Freni. It (sort of) looks like Adelina Scarabelli...(the last name looks like it could start with an "S") but I found another autograph of Adelina S. online for sale and the two look nothing alike...

Thoughts?

http://surfmypictures.com/image/7aea443 ... k1mey.html