Please I need help I can’t lose my friend

Patient: Hi my friend suffers from depression and she has tried committing suicide 6 or 7 times, all through overdosing. Her latest one was bad and she had to be put on a drop for 3 days. She’s started isolating herself again and saying how much she doesn’t want to be here and how she wishes she was dead. Im scared she might try overdosing again, what should I do ?

Symptoms: Depression, suicidal thoughts, self harm