Sounds like possible Marek's but the paralysis thread I linked to might give you some clues that match her symptoms. Good luck with her.
Is she able to bear weight at all on her legs? Even one of them? Sometimes an injury leads to one leg ending up in an unnatural position, then it gets cramped that way, then they are unable to use it normally and it can look paralyzed. Sometimes this results in an overcompensation injury in the other leg and they can end up stuck. For such chooks a walker or stroller type setup, like for children but minus the wheels, with a sling that supports the body, is often the only way to rehabilitate them.
I wouldn't worry too much about her going into shock, once they've been in trouble for long enough most animals become very resigned to being dealt with even by predators. They become more open to forming relationships they were never going to accept in a healthier state. Birds aren't generally as fragile as the common perception of them suggests.
Best wishes.
