have you tried extract of sea muslce/kelp - homopathic medicine . My ex mother in law used it for her aged golden retriever to allievate arthritis - she was a pharmasist and adjusted the dosage to suit him ( weight and age)- helped him - keep her off cold surfaces at night time as the cold gets into their bones. This is a few things she did to help her retriever- lived until he was 16! Sunshine will help her for sure. Sweet dog - but the staffy won my heart as I have had 4 in my lifetime and they have been the best dogs ever. Good post