My girlfriend has starved herself for 10 days!

So I was a bit suspicious about my girlfriend eating habits but recently I found out she definitely has a eating disorder, and I also find out she hasn't ate anything in 10 days I didn't even know it was possible.

She lies to everybody including me she tells her parents she already ate with me or with her friends, and with me she does the same. I finally confront her and she told me she hadn't ate for the last 10 days.

I'm really shocked and I tried to force her to eat but she start yelling and crying and left my house. I try to call her parents but they don't answer I'm really worried I don't know how to deal with this what should I do?
My girlfriend has starved herself for 10 days!
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