Cat bitten by rats, foaming at mouth & pooping. Is it an emergency?

Oh my. This sounds serious indeed. I would highly recommend not waiting for your regular vet to open to take Chile in, and instead take her in to see your nearest ER vet right away.http://www.vetlocator.com/hotline.php

Foaming at the mouth can mean that Chile is suffering from an acute allergic reaction or is in severe pain from the bite wounds. Disease tranmission usually takes longer than that to occur, so it is unlikely. However, Chile needs to be examined, tested, and treated by a medical professional as soon as possible. There isn't much you can do for her t home without knowing what is going on internally first and then pursuing medical treatment based on her injuries. Just try to keep her in a small enclosed area like the bathroom so that you can keep a close eye on her and she doesn't have many places to hide in, and allower her free access to water. Best case scenario is that she is just really painful. I would also recommend rinsing off the Turmeric, in case her system is just not agreeing with that. Wound should be cleansed with Betadine diluted 50:50 with water or Chlorhexidine solutino 3% diulted to a light blue mixture and then allowed to breathe. She likely will need antibiotics and pain medication from your vet. Don't be tempted to give any over the counter pain medication to her, becuase no human pain meds are safe for cats. I really hope that your pet Chile is going to be ok. Best wishes and take care.