YES, THIS IS WONDERFUL. i love the idea of them having a slightly cat-and-dog dynamic; gregor isn't one who will speak his mind when he disagrees, but since they are communicating often, he might feel comfortable enough to trade barbs with her. i could also see him being fond of her in a way, if only because he has a soft spot for younger women (this sounds terribly misleading, but it's because of his younger sister).
he probably doesn't take her input very seriously though, i'm so sorry.