Custom follower with unique marriage ceremony

[Veyond]

I've an interesting observation - Sofia, the Funny Fully-Voiced Follower, has her own unique marriage quest, attached to her own relationship system. this quest, however, does not make you, the player, married as per the game's recognition. you can still marry other NPCs as though you're unmarried. I wanted to ask if anyone has any idea of how to make the game recognise this as a legitimate marriage. I ask this here and not on the mod page because the mod was last updated in 2017 and nothing's been heard from the mod author since. I have also tried using the "marry via console" method on Sofia, following all the steps but without success.