Hey Silk,
I want to preface this by saying that this story may just not be my thing. Social intrigue just isn't that interesting to me (the thought of ever reading
Pride and Prejudice makes me cry inside).
That said, I didn't find much to be interested in here. First of all, I don't feel like I have a clear picture of anything; most of your scenes feel fuzzy and out of focus, and new information was often presented in a confusing way. As an example, towards the beginning it took far too long to establish that Emer was in a carriage, on a trip, and not reading alone in a secluded corner. When we
do find out that she's in a carriage, it's through an offhanded thought about her father scorning it, which confused me. "Carriage what now?" (EDIT: Nevermind - I'm a doofus. :\)
You seem to be setting up the man in gray to be important somehow, but I found it odd that "man in gray" was all Emer could peg him for. If he's officiating in the wedding, wouldn't she at least know what sort of position he held?
I actually thought the wedding ceremony was nice. It made the tradition feel rich, and there were a few nice images and metaphors in there. The whole thing felt plausible and more focused and real than anything else in your story.
...but it didn't feel
important. Emer's sisters feel like bit players, Lord Flann doesn't look terribly important, and frankly I don't really expect much to come of the affair, plotwise. This makes it boring to me.
Beyond these concerns, from what I've seen so far the characters and setting look pretty run-of-the-mill. We've seen the repressed and rebellious noble's daughter many many times. We've seen medieval witches-and-wizards settings several times over. That's not to say you can't write a good story with those things in it, but you need to bring "the interesting" and "the unique" to the party for it to work.
Sorry if my comments aren't very useful. I'll send you an edited and commented version that should be more helpful.
Here's hoping the next submission grabs me more!
(Edit 2: After a second readthrough, I feel my initial impression of fuzziness is more my fault than the story's. I must have just been distracted or something. So, don't puzzle too long looking for what isn't clear and focus on making things interesting instead.
)