Hello & welcome, I am Dr. B, a licensed veterinarian and I would like to help you today. I do apologize that your question was not answered before. Different experts come online at various times; I just came online, read about your wee one’s situation, and wanted to help.
Again I do apologize that my colleagues could not aid you sooner. If you would still like assistance, can you tell me:
Does she seem sore in her back end?
Will she allow you to lift her tail
Can you see any sores, redness, wounds, or lumps around the rectum?
Does she seem sore anywhere else?
Have her stools been normal? Softer or harder?
Anything happening around the house that could be upsetting her (ie new people, changes in routines, neighbor cats visible out the window, new pets, etc)?