I'm so sorry to hear about Molly.

YLL has given some great advice. A joint supplement to try is glucosamine, which you can get from most health food stores or pharmacies. It helps humans with arthritis pain and I know people who use it on their elderly cats and horses, with success.

A friend has a thoroughbred in his late 20s, and he's arthritic in his legs. He's shown relief with the use of a magnetic rug, strange but true.

Good luck with any treatment you can find. Fingers crossed that Molly's quality of life improves.