So why did she stay married to him for so long?
Very raw movie, interesting, but very grim and depressing. They seemed to attempt to offer some kind of "hope" at the end with the wife telling the a-hole husband she is done and leaving him...18 years late. How in the hell did she not leave him beforehand? What, he was a nice guy and "changed" ? What exactly is the excuse? It's obvious this guy was always a psychotic gutter trash slime. And yet she married him, had 5 kids with him...and no matter how much he treated her and her kids like animals, it took her 18 years to walk away?
There is no justification for that. Both parents were equally responsible for the death of the daughter.