Once you're in Paris it's easy enough to take another flight or the train to wherever. I haven't been to southern France personally but it sounds like your wife would love it. If you can afford it I think you're doing yourself a disservice if you don't go.

If you want good pouting, by the way, check out Duckfat in Portland Me. It isn't remotely French Canadian but it is delicious. Just be aware that there will be a line to get in.