Anyone who had a family member with mental illness knows there is precious little this family could have done to intervene. Once the person is an adult (over 18) the privacy laws and constitutional rights make it extremely hard to help someone who does not want help. And unfortunately, one component of many mental illnesses is that the person doesn't see himself as ill; it is the people around him who are sick and in need of assistance.

Now one has said, but I have wondered if the parents are fluent in English. That maybe another reason for the daughter stepping in, and the lawyer as well.