Hi @PermanentlyExhaustedPigeon80sorry you’ve had to find us.
I haven’t had chance to read all the replies you’ve had but the thing that’s jumped out at me is that your dd is vegan. There is a strong link between children being vegan/vegetarian and going on to develop anorexia. Anorexia is ultimately a biological illness that is caused when the brain and body goes into starvation mode. When children are already on a restricted diet this is easier to slip into.
I would push back hard on the vegan aspect as in order to get your dd well she is going to need a lot of healthy fats including cream and butter. You could say to your dd that unfortunately she is not well enough to recover on a vegan diet so this has to change.
Taking control is hard and FBT done correctly is carnage but once you have control your child will feel an immense sense of relief at not having to make choices that they know are harmful anymore.
Yes to getting signed off work, I did this twice for around 2-3 months to get my dd back on the right tracks. Yes to pulling her out of school to establish the eating plan - your dd needs to know you are not messing about. No food = no life 🤷♀️
Is the school aware and will they supervise lunch?
Has your dd had all the physical checks? She sounds very ill, do you know her wfh? My dd was never dangerously underweight and eating around 1000 calories a day however her heart was dangerously slow and she was physically shutting down.
My dd is also ND as are most of the children on this thread, it’s a common theme. I was able to use my dds preference for rules and routine to my advantage in getting her to eat. Originally it was very rigid but as time has gone on there is more flexibility.
use whatever leverage you can to get food in, I took dds phone away for several weeks and she was only allowed it in the evening if she had eaten the food.