What about splinting her legs and giving her some aspirin for pain? You can dissolve at baby aspirin (81 mg) in water and give it to her a few times a day. Or maybe crush and sprinkle on her eggs. I gave my 12 week old a few drops three times a day, so maybe go lighter because she is much smaller. Maybe she's not pooping because the eggs she's eating are mostly digested- like a low residue food.It took my 12 week old, who hurt her leg, about 10 days to stop limping. The first few days she just laid down and let me hold her, although her appetite anddrinking were good. You probably will have to keep her separate until she is stronger.