My 14 year old daughter had anorexia 2 years ago. She spent 8 days in hospital for 'refeeding' and was then discharged. We had no help- CAMHS had to make the anorexia diagnosis and even though the doctors agreed she was anorexic, she just lied to the CAMHS psychiatrist. Her heart rate was 35 mom, she looked dreadful, she was 5'7'' and weighed just over 6 stone.
I read everything I could and took advice from the eating disorders board on here too. We instituted a 3 meals, 3 snacks regime and I took total control of her food. This is the Maudsely Family Therapy approach, developed by specialist at the Maudsley hospital in London. The brain shrinks with anorexia and the child cannot make informed choices for themselves. You cannot let them dictate what they are eating. You need to reinstate foods they previously ate. Go slowly but insist they eat what you prepare. She needs high energy foods and 'good fats' are especially important for the brain: plenty of olive oil, whole milk, full fat yoghurt and cream. Your daughter will cry, she will shout, she might swear at you. That's the ED. You need to be stronger than the ED and take it all. It's very hard. You need to sit with her whilst she eats and insists she clears her plate. You need to be calm and provide distractions e.g. playing cards, watching TV as she eats,
After about 3 months it was like a switch had flipped. She had put on sufficient weight and it was honestly as if her brain changed. It's not been easy but this approach works. I believe it saved her. She has not had a relapse, which we are very fortunate with but she has been having sessions with a clinical pyschologist from once she was weight restored. Therapy is no good until the child has started to put weight on.
Good luck. It is so very difficult. Do not underestimate how sneaky children with an eating disorder can be. It took me a while to realise what was happening. The sleights of hand- hiding food in her pockets, up her sleeve etc was unbelievable. She will lie to you. It is heartbreaking. But remember it is the ED not your daughter. The earlier you catch it the better the outcomes, so get going now. I'd also recommend Eva Musby.