Welcome to FDMB, Mia is gorgeous, not to worry you will not be the first to bit your nails raw, I can say we all have in this Forum, but you are in the right place, Feline diabetes IS manageable,, with home testing, a wet can food diet between 0-10%, the best insulins for diabetic cats are Lantus and ProZinc, a 12 hour insulin and gentle to out fur babies, as your experienced wife knows, so you are way ahead of all of us that began this journey, blind folded, keep posting your concerns. If you need assistance with insulin an dosing advice, let us know, please tell us what insulin is Mia on and what is her dose is she on at the moment