Caesonia is an Imperial member of the Seventh Legion. You will help rescue her regiment from the spiders at Nilata Ruins. When spoken to, she says, "As weary as we are, we can't wait to be on the road. I was so eager to see the world when I joined the legion. Now I just want to see home again."
If she is spoken to during To Aid the Enemy, after rescuing the soldiers, she will say "You did it. It's so good to see their faces again."