This section contains spoilers for: Dragon Age: Origins.
The Warden first meets her when she comes to inform you that the queen is being held prisoner at Arl Howe's estate. Erlina says that Queen Anora believes that she may be killed, and her murder blamed on Arl Eamon. Erlina seeks your aid in freeing the queen and you cannot refuse her. Once at the castle, she will provide disguises. She also helps distract the guards by telling them to check whether or not there are darkspawn nearby.