I can't tell if that is blood or a cecal poop that looks reddish brown. I'm sure you can probably tell the difference in person. Hemocult strips would be useful, LOL. Blood in the stools can be caused by coccidiosis, necrotic enteritis, and capillary (hairworm.) She has a lot of mucus and urates in her stool too. Coccidiosis can be treated by Corid (amprollium) in the water for 5 days. Dosage is 1 1/2 tsp per gallon of water. Enteritis can sometimes follow a chronic case of coccidiosis, and can be treated by antibiotics such as amoxicillin, Tylan, Aureomycin, and many others. Fenbendazole the active ingredient of SafeGuard Liquid Goat Wormer or the Equine Paste, given 1/4 ml per pound of weight for 5 straight days. It would be good to sweet talk a regular vet into just running a fecal float, since you could narrow it down. Give her some vitamins and probiotics between treatments, or when she is not on medicine.