Hi TammyG,
What a terrifying thing for her to go through & it must be very hard for you!
There is hope for her without meds, it is a cycle that causes panic attacks as this site will show you. She may have stopped eating because she may have a panic attack, people stop going outside because of the same fear - panic attacks are awful, you feel just horrid and you are genuinely frightened. I have had them for years.
You could look at doing the CBT therapy with her on this site, it is a very good programme that would help your daughter and yourself understand a little more about panic. Understanding it is a long way towards controlling it.
I feel for you, having children I know this must be frustrating. I don't think she would be faking it - but she may be doing it just to make sure you are still around & you haven't forgotten about it as it is probably on her mind all day (and night).
If she could get around the thought that she will not die if she eats, that it is just her body reacting to a fear that makes her panic. It also means she is a very alert young lady.
I am not a professional, I would just want someone to tell me a little about it.
I wish you all the best, good luck & if you need answers to any questions the support crew around here are fantastic.
Kind Regards, Toni