In my experience, young people believe "they know the best way to do everything". For the safety of Sophie, I would move her cage to your bedroom and because she is an out of the cage girl, leave her cage open and lock the bedroom door until you get home from work. That way, the kids and have the rest of the house to let their dogs destroy whatever they want. Of course, the other alternative is to make the guys kennel their dogs until you get home. Of course young people are not always good about quickly closing an outside door, so in your place I would keep Sophie in the bedroom until you are home.