Oriana is described as a lovely woman who was born into a rich Antivan trading family. During the Human Noble Origin, she is located in Fergus' room, where she and Oren are saying their goodbyes to Fergus when the Human Noble is sent to find him. The Human Noble's parents then join and they all share an intimate moment with each other.
This section contains spoilers for: Dragon Age: Origins.
She is slain during Howe's attack on Castle Cousland. The bodies of Oriana and Oren are found in Fergus' room. Howe will later mention to the Human Noble that he had their bodies burned and discarded in a pit with the rest of the bodies from Highever.