Not Snoopy - it's way too soon!

What is wrong with our cats. Last night Snoopy threw up. She never throws up, but I’d given her some chicken skin, so thought perhaps it had been too rich for her. But today Don emails that she has thrown up again from eating her cat food this morning.

He was concerned because of her insulin dosage. I told him to call the vet. I wonder if we will lose her, too. I am not ready to say good-bye to another cat so quickly.