Zahra takes charge of the household - an oasis of sorts outside of the capitol - and the place where Zaton goes to recharge and remind himself Why he is doing the risky work of a Desert Stalker.
She makes sure that each woman knows her place in the household, and she is whatever support Zaton needs in this new, more dangerous world.
IMO - she is the Perfect wife/confidant/partner in 'crime' for Zaton and one of my favorite 'strong' female leads among the many AVNs I have enjoyed.
Her strengths elevate Zaton versus making him a lesser man than he would be without her.
Rabiah would never have achieved what Zahra did with Zaton and I suspect this rubs Rabiah the wrong way when she dwells on it.
After all, her selfishness led to the MC and Zarha finding more than friendship when she teased the MC one too many times and then left him with blue balls, a condition which Zahra had no problem resolving once the MC decided that he Was not going to suffer from Rabiah's teasing anymore.
It is one hell of a way to say: I'm dating your sister now!
Cheers!!