Also, I was wrong on her initial weight. She was 9.8lbs. Now she is 7.8lbs. She does eat, but like I said, she doesn't forage around all day long and get Duck feed as well. It's just the duck feed now. She has a good appetite when she eats. I can't get her to eat any treats or anything other than duck feed
Is a vet an option? I hate to be all wishy-washy on giving medication advice, but in this case I really think it would be best for you so consult a vet.
She is losing weight, and her joint is really swollen, the really concerns me.