>>538095576
Heretical: None
Dogmatic: I don't think there's a mandatory requirement for celibacy among Ecclesiarchy clergy, Argenta could recognise your devotion to the Emperor and your deeds as a sign you're on the path to Sainthood. Your union is a representation of shared dedication to the Emperors will.
Iconoclast: Argenta becomes disenfranchised with the brutal ways of the Ecclesiarchy and the Imperium and sees/learns your character's own interpretation is more aligned with the Emperor's will. By extending mercy to the people of the Imperium and trying to better mankind she chooses to be with you.