While going to the Restaurant Zahra picks up a Chain and you have an option to tell her she could be in Control. Even if you tell her it should be on her she tells you to ask nicely.
The options so far where never toned in a way that she would actively tell the MC he has to seek her consent. It was more that her consent was implied.
Later on she tells the MC he has to wait for something before he can get hands on.
I don't feel the other decisions so far where directed this way. It was more of a how much will the MC take of what he wants. Not how much is he allowed to get.
They've been together for a good few decades. This date was essentially a treat for her and a affirmation of their mutual relationship. She's a rather dominant person herself.
The MC doesn't have to drive home his dominant role at every turn for her to know her place in the household, which is at his side in 95% of the circumstances anyway, not at his feet.
She's absolutely free to assert herself now and then, without him feeling insecure about it and wanting to put her in her place, especially in public.
Even within the context of a harem, they are a power couple more so than her just being only his wife and not her own person, who has her own, earned, character and authority.
If she didn't hold her own and challenge him now and then, would he not have grown bored of her?
The idea is to create characters that aren't one dimensional. We don't always nail it, but we try.