Helping Someone with an Eating Disorder

I received a comment and questions yesterday from a Father who has a child currently in Rhodes Farm
The comment was left in the What not to say to someone with an eating disorder part of my blog
He said he is slowly learning what not to say to someone with an ED
But he is finding that there is not much left to say when you take in to consideration all the conversations that you should avoid
So I thought I would hand this question over to you my readers
And then make a post with the results
So I would like to know from you
What helped you when you were in the midst of your illness?
What conversations helped you?
And hindered you?
What do you wish the people around  you knew?
And what do you wish they would do?
Please do comment if you can think of any advice to give this father
I would really love to help him
And give him some hope