Friend, the increase in frequency to defecate and loose stool is consistent with inflammation of the colon (large intestines), she has colitis. This can be caused by many different medical conditions. It will be difficult for me to determine the exact underlying cause without a hands on examination and some testing. But, common causes are: Diet, parasites, auto immune (IBS), infections, or even part of a systemic disease to name a few causes.
In this case, I would recommend a hands on examination with family vet, xrays, fecal analysis and blood work as initial screening test. Treatment will be based on exam and test results. In the meantime, this is what you can do:
1- Do not give things like Pepto Bismol or imodium.
2- Change her diet to rice (50%) and boiled boneless chicken or ground beef (50%) until the stool is back to normal then wean her back into her regular diet.
3- Supplement with a probiotic (fortiflora), these are friendly bacteria that help with regularity and inflammation. You can buy this over the counter in any pet store.
4- Follow up with your family veterinarian for a hands on examination. If cost is a concern look into your local ASPCA or Shelter where they often offer veterinary services at a lower cost.
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