What happens if you put unwilling subjects into the catgirl machine? Is it just that they're concerned about people being catgirls who don't want to, or do they come out wrong or something?
oh, that's just very bad form, you know? no TFing people who don't want to be TF'd
...unless they grow to like it, in which case that's fine. hence the built-in 'wiggle room' in the software of each respective machine