if i could, i'd adopt her from you right now.
I had cats growing up, and then in my first apartment, we practically had a zoo. And then we wound up with just my doggie in the end... Small critters don't last long, neither do fish. And i had to put her down in december after only 6yrs with her (she was about 9).
I wasn't ready to get a new pet then, but i'm really missing the companionship.
I hope the owners come forward. And do broaden your search and look at online pet finders sites. Some cats have been found hundreds of miles away from home.