Because religion is still the brainwashing machine that set it in motion.

Saying that it's all because religion and not blaming the father is stupid, but so is ignoring the importance of religion as a control tool.

Because fundamental Islam pretty much encourages violence against women?? Why are you not asking why violence against women is much more prevalent in Middle Eastern countries than almost anywhere else on Earth?

Despite how you've framed your comment, "blaming the dad for being a murderer" is the most surface-level analysis of this situation. We need to ask ourselves why did he kill her (as in, what environment needed to exist to make a father think that murder was a solution to whatever problem there was).