During disc 3 when Alexandria has been trashed, Garnet and co. end up in Lindblum, Garnet loses her voice and goes back to traveling around the world with you. I understand sort of when she initially left, but should she have gone back to Alexandria after? The people lost their first queen after she went all war crazy and then the city gets destroyed by a giant dragon. It might be the time when the people need their new queen the most?
Don't get me wrong, I like having her in my party. But for a while after she isn't performing well in battle anyway and she can't talk and I do have a backup white mage/summoner. She probably wouldn't be the best at queening at that moment, but just having her there might be of comfort to the people.