I can understand that too. I, like anyone, could be killed in an auto accident tomorrow, and grief would follow. People always risk pain when they care about someone. Disease of all sorts, accidents, catastrophes happen all the time. Suicide, however, is considered differently.
People feel guilt after a suicide - but it s unfounded.
You can t be a better friend, monitor all activities, utter any magic words to prevent it. If it happens it s not because of any one person, it s because of a mental disorder and free will. There is no one else to blame, except perhaps in instances where medical professionals ignore warning signs or fail to treat a patient. But my friends are not those people. My friends are high school buddies, coffee companions, net friends.