i married Ysolda too and Vex gave me a stupid ring to plant into my wifey's house.
And i am the Guild Master
And i m the DB listener
And i m the dragonborn
And i m the harbringer and champion of 9 daedric princes
Not to mention i am the archmage.
So in rage, i picked up my warhammer and SLAM!
i cant kill her

i wish there was the option of telling Vex that the 'victim' of this 'contract' is my spouse. But ya know...=.=