Now, I don't think it would happen because they are taught the current dispensation censures violence. Give them some time to work up to giving that order in say 15 years, I have no doubt most dubs would carry it out.
Good illustration though. Apart from highlighting her stupidity it's a really interesting point in the sense that by complying they would be totally putting their own welfare & future above that of their childrens. The death bit brings that into sharp relief but really that is what they actually are doing when they shun. Putting themselves before their children.