- Did we not visit anymore, assuming that they were a "safe" bet?
- Did we not speak up when we had a nagging suspicion that something was wrong?
- Did we not call to see how they were doing?
- Did no one notice the silence?
It reminds me of an American Indian saying: Listen to the whispers and you won't have to listen to the screams. Except in the case of clients, they usually won't scream. They'll just go away.