Says the person who would sit by and do nothing while his daughter slaughtered his grandaughter.
I wouldn't sit by and do nothing. I would do anything within my power to stop her from murdering her daughter.
You're also making a false assumption in your pathetic argument in support of murder, which is that a woman would be harmed more by being threatened with being thrown out of the house, than being tormented for the rest of her life by her decision to murder her child.