Rogue didn't went to screw over Carol over prettiness. That is a big difference.
Now Emma was mean for the sake of being mean and never felt bad for doing it. No amount of training on Jeen will make up for that.
If they don't wanna acknowledge the cool pink form, they also don't have to do the Emma mentor thing. Even if they did Jeen also saw Emma being a villain trying to mindwipe teen Scott. It wasn't all good things