She is starting to get up there in age. Ask your vet about a product called "Glyco flex" ( hottie is on the 3 level) . It sure did help him. It is made for arthritis and contains glucosimine etc. Its better than the others we tried. ( the cosequin etc). I give hottie a tablet crushed twice a day. It also not only helps with joints, but helps to keep the bones stronger. Hottie condition subjects him to fractures- especially in his back where the rise is in a sighthound. He has only had two in 4 years since he has been on this.
You can add just glucosimine and can get this in a tablet form at any petsmart. I do however like the whole regieme in the Glycoflex though..