I think cats are supposed to be that thin. Either way - get her the worm and leukemia shots when the time comes.
But don't go too far - my vet suggested I put my Willie on prozac because he has OCD. PFFFF I'm not going that far with my cats, no way. Let him chew on shiney things if he wants to. I have OCD too!
Cleaning the animal's teeth with lasers? HA HA. How in the hell did these animals find lasers in the wild before us humans came along? They didn't because their teeth were fine without all the pet junk food.
I wonder how much the pet food company pays the vet to promote their product .... I bet it's something like a gift of free trips to hawaii or sumtin.