[Carrie]

He was spending the money on booze instead of his family of 5 children.
They got into an argument about it.
She decided to sleep alone because of both of the above.
He got pissed off at this "affront" (to his king-of-the-house position, I suppose) and thought that beating her would provide a positive solution.
In defense, she did the grab and twist maneuver.

And she's the one going to jail.
The world is a very fucked-up place.