I know exactly how you feel. I have a family member that is actually ok with this procedure as well. They say there are wrong ways and right ways for it to be done. They work in the veterinary field. But I say it's ALL wrong! There's no changing minds either. I am so sorry.
If I were you and lived close enough I'd volunteer to come over weekly to clip the kittens claws. Also suggest the nail caps (can't remember the name) to go on.