To mary her?
I had my permision to see lady from her brother but i just had 14 relationship.
Maybe to mary a lady you need to have bigger relationship.
Just improve a little more your relation with her brother and he will accept.
There is also option to say her "Perhaps I can change your brothers mind." , something like that.
It worked for me.
So, I read somewhere in game (I think it was "notes" option) that I can change Capital town to some other and that I can do it by speaking with minister.
I spoken with my minister but I didn't saw any option for moving capital to another town.
So how to change my capital?
(sorry for my grammar)