Being a functional anorexic isn't a simple task. That takes a will power so strong that it can make you conquer impossible feats every day. I think mothers would be the most likely candidates.
I'm not functional b/d I restrict 24/7 which leaves me with no motivation or energy. So I do everything slowly, very slowly. I can't work b/c I can't stand up that long. I having anxiety attacks already from the zone I'm in. I'm gonna break into the 16's soon. Yay
All you can do is try. I could work if my employer didn't mind me bringing things to work with me.
Like my own food water and the like.
It's possible to function with anorexia but how long is the question.
Karen Carpenter had her singing career but the Eating Disorder started in 1976 and it killed her by February 1983. She appeared to be fully functional but she had to nap between shows and all the time she wasn't on stage. Everyone knew she was in deep trouble but they couldn't help her or stop her.