I liked the ending a lot, especially since it's your own twist on the events after the battle of Denerim, yet, it ties quite nicely into Witch Hunt and the official reunion with Morrigan.
I was particularly impressed with the dynamic between Ophelia and Morrigan. It's not usually easy writing a romance between such strong personalities, but in this case they compliment each other perfectly. Morrigan, in particular, was true to how Bioware portrayed her in the game, and remained true to that throughout the whole fanfic.
Overall, it was a great story. Oh, and you get extra points from me for adding Isabela in. She's my favorite DA character and the whole card game in the last chapter had me laughing soo hard, because that's exactly how i imagine any game between her and Morrigan would end up.