@Mutsy -I have also heard that children that lose a parent sometimes deal with the pain as a form of abandonment when the parent really the parent could not help the situation.
This is where I think that grief therapy is helpful because it helps the child to slowly heal and deal with their feelings in a constructive manner. When children or teenagers become withdrawn and don’t talk about their feelings it is time to really seek help because the feelings that they are experiencing might be overwhelming to them.
I also know that teenagers do not have the ability to put things in perspective so a wait and see attitude is not the right approach in my opinion. Things don't always get better.