All I can say is, as a parent it hurts me to see my children participate with any sin at all.
Some time I think when Our Lord carried His Cross it would have been so much lighter if I had never been born because my sins, and the sins of my children and so on, would not have been on His Cross.
As a parent these days, it is important to teach your children the horror of sin period, even telling a lie is hurtful to God.
As far a ɧoɱosɛҳųαƖ behavior goes, I would probably faint with fear for my child, and start to cry, feeling I have failed in some way to do the Will of God. My first reaction would be to start preaching but that would only be my emotion, then my inteligence would kick in, and I would try talking to the young daughter about behavior being a choice, we are not animals, and even some animals I am afraid to say have better morals than these young people. There I go preaching again . . . but not yelling anymore.