cathedral point

So… what is Emilia’s mission? 

She apparantly at least attempts to kill her husband (remember the setlock reports of an explosion at Bristol Cathedral? The gun she pointed at him will probably be fired eventually).

Then she kills Sir Eustace Carmichael - why? Is she linked to this women cult? Did Emilia fake her suicide to kill a bunch of people that got put on a list by the cult? Or is the wedding dress passed on to everyone who likes to kill someone?