Sounds like the proper response. Choices have consequences.
Do agree-- The response seems Biblical. If Dr.Keyes has
taken it to his church and they have attempted to reconcile the rebellious child to her parents,and to God.
But if she has continued to ebrace her error then there
can be no room and no support for her wicked ways from a godly house.
This is exactly what I would do.
One has to wonder, did they set rules for living under their roof, and she stomped off on her own to live her own life.
So she's throwing a tantrum because she's being forced to act like an adult and take responsibility for her actions rather than leeching off mom and dad.
And he is not being a hypocrite and putting his child before God and morality. I commend him for being true to his beliefs. Hopefully his daughter will repent. The best thing he can do for her is give her a consistent and true message so she can have a barometer of right and wrong to help her find her way back.