Oh my. Well, it's a good sign that she's eating and drinking. I have to say, if it was me, I'd try to pull that leg out and get it to pop back in. It will be painful for her, but I think the longer it's dislocated (assuming that's what is going on), the more chance it could be cutting off circulation to nerves and tissue, which would result in a slow, painful death eventually. I have absolutely no experience with this, but if you can feel that there is not a break, I can't imagine what else it could be other than a dislocation. She surely cannot continue to live like she is, especially since she's a free ranger. She'll surely be lost to a predator since she won't be able to get away.
My DD is a nurse; I recall her talking about putting a man's arm back into the shoulder socket when it was dislocated; he was restrained by a few other nurses, then she held his arm above his wrist, put her foot under his armpit, and pulled....VERY painful, but she did get it popped back in. Might be worth a try??
Hopefully, others will hop in & give some opinins for you!!