If the family members choose not to receive those lessons, the great gift was all vain and those individuals will have to learn the lessons in other ways. Some would perhaps view those children's gift as a sacrifice, but it really isn't. It is a gift of great love. You see, parents often believe that their task is to bring knowledge to their children. It is quite the contrary.
All children come with the gift of knowledge to their parents.
The knowledge they have to give is the knowledge that really matters.