Since the document says that Luca was the widower of Maria de Gennaro, then obviously she was deceased. There is, however, no word in front of her name, like the word fu, to indicate that she was deceased.
I'm still having trouble deciphering the first name of the deceased Migliozzi
Maybe you'll see the name again in some other record and the handwriting will confirm that the name is Chiara. For now, I don't know what to say, but you did a really good job in even perceiving that name in the handwriting. I didn't see that at all.