
Not looked at this particular CSJ remedy, but they do seem to have some good stuff. I use some of the herbs etc they do in the raw blended veggie mix for my two, as I think they are beneficial. Two things I use in the raw blended veggie mix that aren't fish related, turmeric, and apple cider vinegar, both are good for promoting healthy joints, worth considering using if you can.
One thing people discard because tomatoes are considered bad for aging joints, is sardines in tomatoe juice, obviously with the fish connection this wouldn't be a consideration for your girl. If you can get her red tomato sauce in small doses with something else, this contains lycopene which is beneficial, contains very effective free radicals and is thought to be an effective anti carcinogen, the bits of tomatoes to watch out for are the green stems and leaves, or unripe fruit, which contain solanine, and this can exacerbate joint problems.