Submit to her

You started fiddling with your wife's settings as she told you to. Your hands slightly trembling as a coolness runs through you, as your hidden dark desires started to surface. Bubbling up little by little.

You start by making her perfect. In every way possible. Your wife deserved it after all. You made her taller than you by half a head. If you'd need to ever look her in the eye, you can only look up to her. You rejuvenated her being, making her appear even more youthful. Her skin being cleared of any sort of blemishes/marks, turning pristine white, and a neigh celestial complexion. Her eyes, becoming clearer & clearer like some jewel, as if becoming divine, and able to pear into your soul and suck it away. A cute forehead and nose resting between them, adding a pure look to the face. Yet coupled with a set of watery bewitching lips. Not any less than that of a succubus.
Made her body proportions and assets grow and shift. Giving her a well endowed motherly bosom and a giant-ish, curvy yet succulent ass, screaming 'breedable'. Giving her both a cute yet slutry and inviting appear. Her body gaining a softness, making her appear like a living doll Along with headful of silky shiny hair, reaching under a bus. Void of imperfections. All that, and then adding some more to it.Naturally, you didn't only change her looks. You refined her voice. Made it perfect. Making it almost too much alluring. Convincing. Her sweet spicy voice compelling you to obey.
You made her intelligent. Much much more intelligent she was before. Much more that you are. You won't ever see her schemes coming or can dream of outsmarting her from now on, should you ever try to. Hell, you even threw in an almost super-strength. You are never going to be able to overpower your wife in strength again either.
If that was not enough, you also made the her 'nectar' taste divine. Making it slightly addictive too. Along with her sweat and milk.

Then you started increasing her confidence. Her boldness... lewdness. Making her more confident. Domineering... Perverted. Absolutely perverted. Much much more. Domineering and assertive. Making her a dominatrix. Throwing in a little sadism & mean-ness, and a few other fetishes... especially a fetish for inflicting humiliation, and teasing you. (And a chance for feminization.)
Of course, also changing your relationship dynamic for good. You will not be wearing the pants in the relationship anymore. Not that you ever asserted yourself over her, not being that dominant.
She's not going to be like that though. She'll be proper matriarch. She won't be tolerating any sort of nonsense or improper behavior from you. You'll remain in your limits. You won't be raising your voice in front of her. Won't be dressing improperly or outside her wishes. You'll take her last name instead. Won't be with-holding any sort of money, or will make any decisions without her consent.
You'll give your wife her due respect, and serve her bowing down as a good househusband should.
Obviously, she'll still love you loads. Shower you in it even. Almost all the time. In her own way. You'll become an obsession of her. A deep seated obsession. She'll never be leaving you. Ever.(Lets hope you'll never come to regret it.) And she'll hold a command over you. But she'll also punish you. Be cruel to you, if she ever deemed to do so.

Lastly, you changed her background and job. Changing her into a modern day royal now. One with actual real power and clot. Fearsome power and clot. Almost no one in the world being able to contest her.

You make the changes, as the world around you starts to shift and change, setting into how you wished it. As you stand in front of your wife, in what you realize soon enough as your wife's new bedroom chamber. With her watching you over from her bed.