As the others said..it's very hard to tell at this point. Sometimes it's also difficult to tell when snakes are in pain. If she eats and poops..that would be a good sign. I take it because you are in a remote area...there are no exotic vets that you could take her to? If it comes to the point of ending her suffering..as Kat said, we could advise a way to do that in a way that would be humane/ cause the least amount of suffering. Glad you found her and you are trying your best to help her.