i don't know if I'm the first but i can't get Hilund to as a marriage option it turns out that

i don't know if this had happen to anyone else but this seems an odd bug

In order for her to be a marriage candidate you need to complete her favor quest where you

I'm not completely sure, but she may not offer this quest

, because doing this lowers the disposition of most (if not all) of the members of the Thirsk Mead Hall. She may only respond with a negative comment such as "You, what do you want?".