Most Helpful Girl
You're under 18, so I suppose your friend is under 18 as well. At that age girls are so naive and controllable... Tell her the truth! She won't take it, but at least you did what you had to do to warn her.
Most Helpful Guy
Yeah that's actually unhealthy. It's abusive in my opinion because he's basically forcing her to stay with him or be responsible for his death. She should just leave him.