The worse thing we can do is turn our back to our children. This will give them permission to embrace misguidance and even reinforce the idea that they have no one upon whom to depend. Keep working with your child. Continue to guide them to what is good. Sometimes when they are at their lowest point we must do all that we can to identify with their psychological pitfall and help them to climb out of the hole. We haven't always been the responsible and respectable people that some of us are. Every ill that has a hold upon our children can be undone. We, just have to show them the way.