Right, but is the fur stained because the urine is that color or just from the amount of time she's had trouble... I usually try to get my pups to pee on a surface (rock hard dirt, usually, or gravel) once a week so I can check the color. Maybe try something like that?
Maybe I'm wrong, but TotW is about 370kcal/cup... You are only feeding her 500kcal/day? I think my guys eat more than that, but they also play with each other quite a bit.
I understood your first post to mean that you only fed raw chicken parts, too. Given that you meant in addition to kibble, it's probably fine, though bone every day is taxing on them (constipating + a lot of calcium). It's been years since I did research. I think I remember too much calcium causing stones, but I'd have to go back and check. I settled on no more than 10% bone, ground into the meat and haven't changed it since. We do supplement with the occasional whole egg (shell and all) and antlers as the nutritionist I used to speak with wasn't convinced they were getting enough calcium. He was happy with 2 additional egg shells/week.
Other than that, we rotate protein weekly, whatever I can find as variety is key...