I would think it would work in the kittens favor that it's her hind legs affected, and not her front. www.messybeast.com has excellent info on all types of birth defects in cats, and her condition most likely has a name. If she is capable of getting into a shallow litterpan, and her internal organs aren't in odd places, I highly doubt she'd be any more work than a normal cat (if there such a thing?) Special needs kittens adapt very quickly to whatever is going on with limbs, or any other malformed body part, and learn what they can and cannot do in no time. I'd hate to see that little peach puff put down if in the right home she can live a long and happy life.