Brennan saw her obvious indecision and wondered at that. Although he was not the type to judge, he was concerned that she was having difficulty. Clearly the Darkspawn threat was getting larger if they were daring to attack such a large settlement. He would admit that he was slightly concerned about that, but forced himself to believe that it was not his problem.
When she put out her hand, he reached out to shake it, "Brennan Wulfe, traveller." It was not the full truth, but what ever was. Saying 'Brennan Wulfe, mage' would likely send her off to find another guard. He had not forgotten her reaction to the other mage after the battle, she might still be under guard. "It was not a trouble, I was glad to be of help." He offered a grin, "Which brings us back to my original point, why are you a guard? Is it a family role?" He had almost been a hunter once, before he realized he was a mage. While in their village children were not forced to follow the paths of their parents, it was often so.
Parents were best at teaching their own children, and often started doing so at a young age.