Help!! Whats wrong with my cat?

The most common reason a cat is foaming at the mouth- licked a frog. Any frog or toads sick is toxic if it gets in your mouth. For some odd reason cats love to lick frogs. This normally requires no veterinary istance, but it sounds like this is a severe case. Make sure she has tons of water (wouldnt make it too cold, could hurt the mouth) and if the condition isnt better within 24 hours Id head to the vet.