Hello,
Many cats are sensitive to over the counter flea products - even those labeled for cats. I NEVER recommend anything that the active ingredient starts with a P for cats. I have treated many many cats - and every one has gone on to do just fin. I'd recommend bathing her immediately with soap and water (I know - its a cat and they hate it). This can progress to tremors and ocasionally seizures. Not to scare you - if she is not rapidly improving after a bath. Please take her to your local clinic for treatment. Frontline is safe and good for cats!
Dr. Meg
No sound, complete veterinary advice can be offered without examination of the animal. Each case is unique. Please see your local veterinarian. Dr. Meg