tl;dr 2 of 2
This idea is obviously completely alien, even anathema to the Western mindset. Worship someone who doesn't deserve it? Pay tribute to someone who can be an utter asshole? Allow power to remain in the hands of those who use it irresponsibly? Our religion's not like that (at least it's not fucking supposed to be), or politics aren't like that, our whole society is about rebellion and individual rights and sticking it to the Man. How can we accept it in our heroes? This has a weird effect on Wondy, who therefore inherited a lot of Abrahamic, specifically Christian trappings - foremost among them, the idea of genuniely virtuous patrons (though the five Patrons collectively are the closest to benign the ancient greeks had on offer, Athena and Hestia in particular), and also a greater degree of submission, fealty and trust than is standard for Olympians. Athena becomes the Mother to correspond to the Father that informed Perez' culture (and Marston's, though Marston treated Diana's religion like he did her royalty; just a story prop rather than an intrinsic character point, much like, say, Clark's alien heritage, and the intrinsic value of it developed over time).
But that's still Mother, not Owner. She knows better than Diana and she's the boss of Diana, and they love each other as parent and child. Thus Diana submits to her will. That's a great deal different than any kind of subservience, just like Tim's regular submission to Bruce's will is a great deal different than any kind of subservience.