Sadly, intimate partner violence is a cultural universal, even if it's not listed in https://en.wikipedia.org/wiki/Cultural_universal. It does not have cultural sources any more than personal names, color terms, or rites of passage do. That is, Turkish people have Turkish personal names, use Turkish color terms, and practice Turkish rites of passage, but they probably don't have more or less personal names or color terms or rites of passage than your own culture, whatever it is.

If you look up the murder statistics for wherever you grew up, you will almost certainly learn to your sorrow that intimate partner violence accounts for a large fraction of murders there, as it does everywhere in the world.

The only especially Turkish thing about this story, to me, is the involvement of the father-in-law, and of course the dotless i.