So you are asking for more character ideas?

Maybe you could add Annie's ex? You could add in how both exes are trying to prevent Anne and Curthbert to be married.

The two exes don't know they are both trying to prevent the marriage. And maybe if you want a happy ending the two exes find out they are trying to do the same thing, and find each other and blah blah blah.

Hope this might have helped or maybe sparked an idea of your own

That is awesome.

no problem