Your SWMBO sounds like mine.
But on a self build there are cunning ways to get her to agree .
Take internal doors for example . She wants to have input on that . So I send her loads of links / photos etc .
The response then is “ you choose I trust you “ - easy .
I did the same with glazing , cladding , door handles , even tiles .
Overwhelm a SWMBO with too many options and she’ll gladly pass the work your way ….