Warning symptoms of a friend with Anorexia

My friend doesn't eat and she exercising for 2hr everyday. If she eats she throws up, she not yet underweight but the sign are there, she showed me a skin and bones picture and said that looked great.
She thinks she is fat,
Doesn't understand why she is cold
Where sweatshirts to make her look fatter and hide the problem from her friends and family.

She failes to see the problems

I tried to talk to her, and I told her the blunt truth, but I'm not sure what to do, I been studing Mental Health topics since year 9(year2001). and I'm love my friend, but I'm not sure what to do.


Any advice?