My cat declawed herself?

We had an Earth Quake on March 1, 07 and my cat Sophia freaked out. She tried to run faster then her little feet would go and separated the quick from her toenail. I cleaned it twice a day and tonight her toenail fell off. Of course it's Saturday night and her vet is closed. Her quick is still attached to her toe but is very red with old dried blood on it. You see she was in her first fight tonight with her brother and the nail went. Question: Is her nail ever going to grow back? I do not believe in declawing cats but this was beyond my control. I feel so bad for her little toe. I've been putting pain reliever and antidisinfectant on it. Should I take her to the emergency? It's not bleeding and she's not limping. Concerned Mom Diana