I am willing to bet my hard earned dollar that they plan to say that Zahra died of some untreated medical illness. They'll say that EB wanted to take Z to the doctor, but AB, the mean and controlling abusive husband he was, wouldn't allow her to. Then they'll say that AB forced EB to write the ransom note and help dispose of the body, and that EB feared for her life if she didn't help AB.
I am quite certain this is the star defense attorney putting her story in her place. I don't think they plan to say that EB killed Z because she was abused, but rather, she was prevented from taking care of Z because of the abuse.
MOO and all that jazz.