@Catsback the approach that Ed teams take is generally something called 'family based treatment', this has the best evidence for good outcomes in teens.
There are three phases to this, and in the first phase the goal is to enable / support the parents to 're-feed' their relative. So you can get started on trying to implement this straight away, as this is what they will be getting you to do when they open your case.
There is not likely to be other effective psychological intervention at this stage, as the brain has been malnourished, and cannot engage in the kind of work needed for the person themselves to make any changes to their eating. Seeing a therapist is not likely to be helpful at this point in getting the person to understand or make changes. There is a good ted talk about the fact that the brain is physically changed by having an eating disorder, and it takes quite a lot time for it to recover. Fat, especially animal fat (meat, dairy etc) is essential for the brain to recover.
The essential elements of FBT in the first phase are:
- food is prepared by parents without any input from the person with the Ed, they cannot be involved in the planning, shopping, cooking or plating the food
- the person with Ed comes to the table and eats everything on the plate, however long this takes. There is no leaving anything. The person doesn't leave the room, or avoid the meal. Eva musby has a brilliant chapter on what to say and do when this gets hard. Being supportive and compassionate is the approach, understanding that you are asking your child to do something terrifying.
- There is no negotiating
- there are 3 meals and 3 snacks every day. Again, the person is required to eat everything.
- the goal is for the person to put on between 0.5 and 1kg per week
It is very hard in the first few weeks. This is because the eating disorder is now cornered, and comes out fighting. My dd was completely distressed at eating all the time, and we saw behaviours I wouldn't have expected like she started to hide food - Ed is very sneaky.
If your daughter has been eating very few calories for some time, you need to make sure she is having physical health checks - blood tests, sitting and standing blood pressure, and ecg. The refeeding might need to start at a certain level of calorie and build up, but the basic approach of being required to eat is still the same. I hide a lot of extra calories in things using butter, double cream and oil, but you might need to go more slowly.
Everything I've picked up is that recovery from an Ed cannot happen without re-establishing nutrition. This is the keystone to everything.
The sooner you can get started, the better for your daughter, and hopefully the wait won't be too long for professional support to do all of this. And we are here to support you on this thread too 