I just got back. It is an abscessed anal gland. They kept her to sedate her and flush it out, then said that she will be put on antibiotics. They wanted to keep her but I told them I wanted to take her home and they said that would be okay too ... not sure if it's just because I used to work there and they know me well or what. But anyway - she'll be fine. I was really just worried about it being a rectal prolapse so I'm glad to hear it's not serious. Poor girl though, it's bothering her quite a bit.