Now I leave, travel to the Castle via the overland map, and then travel back to Redcliffe Village.
Next, I return to Redcliffe and enter to Owen's house. I then get another 50xp for opening the vault door a second time. Now I click on a book near Arl Eamon's bed to get the Codex Entry for "The First Blight - Chapter 2" and 50xp. But first, I have more business to attend to in Redcliffe. I also take on the mission of finding the Urn of Sacred Ashes. Now it's the funerary dirge for those killed in Redcliffe. I then repeat the cycle a second time to defeat her for good. I tick them off one at a time to reveal her true self.
Once she's taken enough damage, she'll disappear and replace herself with a number of clones. If her Spell Shield has worn off, then I'll use Cone of Cold or single target spells.
If she casts Spell Shield on herself, then I switch over to melee attacks on her. In any event, I have to wear her health down and the tactics vary according to the situation. If I'm down on either Health or Mana I'll simply use the nearby Lyrium vein, or chug a potion. She'll try to get the jump on me with Horror. The options in that situation are a moment of erotic pleasure with her, unlocking the Blood Mage specialization, or the Tome of Ethereal Suggestion (+1 spell for a Mage). In any event I have to pursue the Desire Demon, and her Rage Demon minions, enough times before I can confront her personally. One of the reasons is that cold-based spells (which Aldarion has but the others don't) work so much better on the Rage Demons that help the Desire Demon. I volunteer myself to go the Fade instead of Wynne or Morrigan. I simply travel back to Castle Redcliffe and speak with Irving again in order to commence the ritual. He agrees to perform a ritual that will send Aldarion directly into the Fade so that he can confront the Desire Demon that is in possession of Connor. Now I travel to the Circle Tower and speak with First Enchanter Irving.
I then speak with Connor and promise to free him from his demonic possession. I go into Connor's bed room to the left, and get the Codex entry for "Aveline, Knight of Orlais". This essentially commits the party to resolving the quest in a way that results in Connor dying.
Be forewarned, if you attempt to enter the room where Arl Eamon lies unconscious on a bed to the north, the Desire Demon will take full control over Connor and force the party into combat. Connor will be in the middle of a large room. Now I go east and then north from the vault.