So, at various times, why does my Main look like an idiot in dialogue?

Example: Shadowheart in pod, can't get her out. My Main is looking all dopey with neck stuck out and smiling weirdly. Happens each playthrough no matter the character.

Also, I'd like maybe for the main character to not smile so much if I'm playing an evil character or one that is more mean. Not sure how you'd do it, but having my Main smiling like she does all the time when I'm playing a Llothsworn murdering fighter doesn't really fit. She should appear more cold and unfeeling.