Who joins the group at a lunch stop and what does she tell Harry?

As the group stops for lunch, a female archer comes from the woods, surprising everyone. She announces she is Kentarre, and she reports that her clan, the filanon, have come to join the holder of Gonturan, as they once joined Lady Aerin when she too fought for Daria with the sword given to her by Luthe. She pledges her clan's allegiance to Harry.