Received from: Dagna [Orzammar - Commons]
Description: During your initial conversation with Dagna (M48, 3) you can confirm that you've already been to the Circle tower and she'll ask you if she can join the mages to study the ancient books. You can agree to ask the mages if they'll take her in and don't forget to mention a possible reward. You can go to the mages right away or you can visit her father before leaving Orzammar and in order to do that you must go to [Orzammar - Commons - Janar's armory] (M48, 6). Talk to Janar (M48, 7) and you can ignore the subject of his daughter wanting to leave Orzammar or you can share the information. If you want to end this quest right now return to Dagna and convince her that she should stay.
If you intend to help Dagna you'll have to start off by leaving Orzammar and choosing [The Circle tower] from the world map. Once you've arrived in the tower (assuming it's already safe here) talk to the person (M33, 1) in command. If Irving is in charge of the tower you won't have any problems convincing him to let Dagna in. You can now return to her (M48, 3) to share the good news and she can give you one of two objects - master dweomer rune or a powerful lyrium potion. If the templars have taken control of the tower (Irving is imprisoned or not in charge) they won't agree to your request. You can also return to Dagna, but in this case your only motivation will be to tell her the bad news.