So “that’s” why she had the problem? Not the change in food?
Keep the kitty out of the flowers....My 2 cents: probably already had a tummy problem and eating the flowers (no grass available) is a cat’s way to “cure” it (make them throw up).
But he said they had her on special food for her urinary crystals problem.....so this episode was probably confused with the lillies. I don’t have any real plants except one bamboo plant and fresh flowers and of coures I grow cat grass on the porch. I know how flowers and plants can quickly kill a cat.