In my experience if someone wants to kill themselves nothing will stop them .A young friend crashed his car in an suicide attempt,he survived the crash and was admitted to the mental health unit when his injuries allowed it.After several weeks there he was deemed OK to be released with support from a mental health worker,he committed suicide the first night he was home. His family were devastated they believed that all the effort they and extended family and friends were making to keep him occupied ,amused ,never on his own before the first attempt and after his release would have been enough to keep him safe .He was just 20 .
My neighbours daughter jumped from a bridge ,postnatal depression was to blame ,again the mental health worker thought she was "doing well" she left a 5 month old baby .Nobody can or should take blame ,we can only do what we think is for the best as CF's friends thought they were doing ,sadly sometimes nothing is enough to save them .