Ooh, nice! And yeah I totally get it, one reason I prompted the pairing is that I like the idea but it can be hard to imagine how it would work out. It NOT working out in an interesting fashion (as in your fic) is plenty engaging, especially for a short fic. I liked how you chose the dynamic where Morrigan watched Leliana die, I've always found that really interesting!
Re: Leliana/Morrigan