There is a term called "social trust". Some societies have more than others.
In the West, when you walk past a person on the street, you do not expect them to stab you. When your daughter gets married, you are pretty sure her new husband is not going to beat her savagely on a regular basis.
Why? Because we have (or had, really) a high level of social trust in our society.
Muslimes do not have a high level of social trust. On the contrary, they are tribal and clan based. Everyone outside their group is their mortal enemy. When they walk down the street and sombody stabs them, well, that is not a shocker.
A universal human trait is the love of a child (even an inferior girl) by the parents. However, the muslim father has no way of preventing his daughter's new husband from beating her every day, or even murdering her. It is simply our of his purview after the marriage ceremony, since females are property solely.
One way he exerts influence and assures her safety is by marrying her off to someone that he knows in his tiny, insular world who he has some sort of influence over: His cousin's son.
Crazy, I know, but those people are purely tribal.
Everybody here should read "The Haj" by Leon Uris. The lack of social trust is pretty much spelled out.
Great novel, I've read it twice (so far - maybe again in a few years). A real eye-opener.