I’m sure that must be really distressing - you never want to see stuff on the outside that’s supposed to be on the inside. It’s useful to know that dogs prolapse normally - when they poop, a little of their rectum prolapses out, and then it gets pulled back in when they’re done, and that helps keep their butt clean. The problem your girl is having is that it’s prolapsing enough that it’s not all going back in.

Did you happen to notice if get poops seemed really loose or really firm?