Any Veterinarians Or Pet Health care Practitioners Out There?

My 16 year old cat decided to stop eating her food after my folks left on a 10 day vacation. I was wondering if cats can suffer from departure syndrome just like dogs can? They come home in 3 days thankfully. She has fresh water everyday, and is still drinking, and i've been able to get her to eat her whisker lickens "cat treat", and also some canned friskies food I purchased yesterday. I just love her to death, and i'm concerned. Any information would be incredibly appreciated.