Hey everybody. You might remember I posted six weeks or so ago about my DD who is 9, having just discovered that she'd become seriously underweight. Just wanted to say thanks so much for all your supportive advice. As I'm sure you'll all understand I found everything quite overwhelming and couldn't bring myself to post replies at the time, but I have been lurking and really appreciate this thread.
Feeling in a sort of limbo at the moment as although we have seen the GP (fairly useless, did a bit of a sad face and told us she's very underweight and needs to eat more. Um, well, yeah that's why I made the appointment!), it's still another week until our appointment to speak to someone from the Maudsley. Her WFH when I contacted them was I think 72% but nobody seems to be treating this as an emergency except for me, despite all the stuff I read about how dangerous that is. I know in the end it's going to be down to us to do the hard work, but I can't help feeling that I've shouted 'fire' and had the response that someone will get back to me in a month to discuss whether they can supply a bucket of water 
Anyway, we are cracking on and she is, thankfully, eating regularly and pretty well. Some days better than others. Still some resistance to things she regards as 'unhealthy', although we have made some inroads and got the odd chocolate, ice cream and pudding into her, and I'm gradually cranking up the average daily calories. Of all the parenting challenges I thought I would face, I didn't think that trying to persuade my nine-year-old to eat more dessert would be one of them!
She's gained a bit of weight, about a kilo. I'm hoping it might actually be a bit more now as the last time I weighed her was the beginning of last week and she's been doing really well since then. I'm trying to hold off getting the scales out too often. But it feels like at this rate it will be a very slow slog to get her up to anywhere near 100%.
I think she's still too active, really. She's been going to school, doing PE, kicking a ball around the garden every morning. I'm a bit lost on how hard to crack down on this. Stuff I'm reading suggests she should be out of school, on bed rest, in a wheelchair etc, but the GP didn't suggest anything of the kind. I feel like I'd be overreacting to just pull her out without backing from some kind of medical person, especially when it was being stuck at home out of school that was at least a partial trigger for this whole thing.
Behaviourally I've seen a massive difference already - her personality is shining through again and she's just so much more engaged with everything. She's reading more, drawing, making things. We're playing lots of board and table-top games together. Makes me weep that she'd got so lost and it took me so long to notice, but obviously this is also all great stuff that makes me think we're on the right track to getting her better. Now she just needs to put on some ruddy weight!