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 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 have any discomfort if you lift her tail?
Is she holding it down or cannot lift it?
Any sores, lumps or redness around her rectum?
Any changes to her breathing?
Are her gums nice and pink? Not pale or white?
If you press on her belly, does she have an tenderness, tensing or pain?