Allie

I have a really good friend named Allie. She's kind if a drama queen and gets in trouble, but she doesn't mean too and I know it. Lately I've been really worried about her. She started self harming herself since about last December. Her parents know and so do our other friends, but she believes that she doesn't need any help. And I recently found out that a few nights ago, someone was text attacking her and she thought she was so bad off, she inhaled sharpies and nail polish until she passed out for three hours!!! She could have died!! She refuses to get professional help and keeps saying that she is fine and she just has "bad days". I'm worried that she's actually going to commit suicide and I don't want to lose her. What do I do to get through to her??