I think you will find that most honour killings in western countries and killings at the hands of violent ex partners is done even after the vicitims have tried to get help.
Its beyond fucking ridiculous that they still aren't listening, still won't do anything. More often than not someone who has the sort of father/brother/family or ex that would kill them, KNOWS they would do it, why won't they listen to them?
a 2 different periods in my life I have been forced to remain in an abusive situation to wait for a bigger attack. When i was a young girl I would be sent back to my parents because a body full of bruises is not enough, there needs to be more.....and then there was more. The second period was with my ex husband, a few times when I called the police I was told that they needed more. they would not help me because he was smarter with his abuse and didn't often leave the evidence needed for charges to be pressed. The few times he did were the few times I was too scared to go to the police.
It's always got to be the final blow.
A friend on mine, the police knew he was coming after her. He hadn't stopped telling everyone in prison and the guards that he "was gonna get that bitch", and yet still on the day of his release, even though she warned them, he headed straight over to her place and beat her for 30 minutes straight before anyone arrived to help. Broke her jaw, her nose, ribs, the bone right under her eye, all whilst their 1yr old hid under the table watching it.
Because the police failed in their duty whe was awarded compensation but they can't fix her scars, or stop her nightmares, or fix her son.
And for these girls in this story, prison, or even death for their killers won't compensate these girls for the loss of their life. It can't. they are dead. They didn't get to survive the authorities mistakes.
I wish I could understand why the simple threat can't be enough to prevent stuff. Why must people in danger be sent back to the danger zone over a lack of proof in these situations where it is fucking known a mistake will cost lives?

Even if life long imprisonment doesn't change their deaths though, I still hope they get sent down. Bastards.