Well, they can do surgical repairs on rat hernias... The real issue is that she is compromised at this point which makes anesthesia very iffy. And it is something that a vet would need to do. Licensed rehabbers are not equipeed to do that and it is very likely they would simply euthanize.
If you can end up getting the poop out and the blockage resolved with soaks and gentle stroking so the digestive system was working again, it might give you some time to get her healthy and to perhaps find a vet for her.
I could be totally wrong here - just looking at pics and grabbing for every bit of info from the thousands of vet/zoo/wildlife shows I have spent my life watching...