your cat will be fine, read the box most likely it will say non-toxic... if not then phone the vet.... Did you ask your dad about rigging something so the cats food is only accessable to the cat. maybe you could move milo's food into the kitchen and put it on the counter or something. or just teach lady not to steal it I dunno... I taught my dogs to leave pixies food alone and they behave. Just try something whenever you put a question on here whatever anyone tells you to do or a solution to your problem you find a reason why you can't do it.