Remedies for Rectal and Anus Issues in Dogs

Hello. I rescued a Pekingese 16 years ago. We have been blessed to have her this long. She has always had UTI, and bladder stones, as a young dog. I make homemade food for her, as 16 years ago, there was nothing available to feed her with out costing an arm and a leg, besides I give her the best food for her condition. Recently, she has come up with a condition called incomplete rectal prolapse. I'm not sure what to do? I cannot have surgery, as I feel she would not survive it. Her age and her short nose are tworeasons. Just wondering what I can do to make her comfortable? She gets apple cider in her food daily, that has helped her all these years control her UTIs. She eats and does her business daily, but the one inch protrusion must bother her. It does go back in after about 10 minutes. Anyone have any suggestions as to what I can do to help her? Thanks