Yes, treat her like a princess, give into her every whim. Feed her a bit of tuna when she wishes. Let her sleep under the covers, in the crook of your arm, every night, being careful not to disturb her beauty sleep.
hahaha, maybe that's just me!
Seriously though, I have no secrets to share. She's pretty much an indoor only cat, she will go out the front door, walk around the side of the house to the back door and that is pretty much the extent of her outdoor travels. Indoor cats usually live longer. We don't feed her anything special. I have tried several times to get her on the expensive food that the vet recommends for good health and longevity, but it only ended up making her sick so she's been on grocery store cat food all these years!
She has lost some weight and muscle tone this year but the vet says it's just like anyone else that ages. 16.5 years is the equivalent of 84 human years and 84 year old women have lost weight and muscle tone also!
Even though, she still acts like a kitten at times and I hope to have many, many more years with her!