Background
In the Silverite Mine at the Wending Wood, you meet a dying Keenan (a Grey Warden). He asks that you retrieve his wedding ring and return it to his wife. A darkspawn wielding a large maul stole the ring.
Walkthrough
Speaking to Keenan, if you choose the text "I swear to you, it will be done", you will lose 1 point of rep with Velanna, or 6 if you choose "She's not with me".
You will find the Darkspawn (Hurlock Dragon-Tamer) in an area where there are three dragonlings and a drake. After looting the ring from from the Dragon-Tamer, go back to the city of Amaranthine. Nida is in a room upstairs with a "companion" at the The Crown and The Lion. Use the dialogue to give her the ring.
Result
Quest completed. Xp
Note
In the room where you fight the darkspawn dragon-tamer is the Fresh Dragon Egg used in the quest Worked to the Bone