Just keep calm, don't panic. If she's not in pain and eating and drinking, just give her more time. I don't want this is sound cruel, but, if she was mine, about this time I would give her one little prod with the hotshot to see just what she's capable of. She might surprise herself - and you! However, I must say this case is different in that you don't know what caused the problem - usually its a hard calving which just requires time for nerves to heal. If you need to put her down, get someone who knows what they're doing to shoot her - that's the kindest. Good luck