Thanks for acknowledging the issue 😕mileyhappy: .
I have since reloaded a save from before the France trip and continued the game in another direction. I don't plan on going to France again with the trooubled sim, unless somebody here has something meaingful to try requiring that. I'm just planning to let her go, as she's an older generation, and a new generation is taking over the household.
I don't think I should mark the issue as solved, should I? Of course I've managed to not loose months of building the household, but the main issue is still not really solved.