Oh, believe me, I suffered with Roberto speaking Spanish for years lol
But Caldecott County is made up by CC, right?
I kinda agree with KT that if Rogue knew French, she'd speak French with Remy all the time. So the no-prize to me is that Rogue was messing up with Jean-Paul in that Asgardian Wars scene. But then we have the Annual moment by Carey. Maybe she memorized those words?
CBR made an article a few years ago about this subject:
https://www.cbr.com/x-men-rogue-french-speaking/