My flouncing activity is invariably dog-walking, as at least I have the satisfaction of knowing I've done one of the chores when I get back. 
Thanks for all the advice re: dd. The school have been mainly useless so far, aside from last year's dep HoY, but sadly he has now left. They just direct her to the counsellors, with whom she refuses to have no truck whatsoever. I know there would be no referral from school to an ed psych. Dd and I did have an intense conversation after I posted this morning, which cleared the air a bit. And we have spent the rest of the day entertaining my dm, aunt and uncle.
QQ, your advice seems very wise. I'm much like BTM in that I'm good at the food and laundry bit, but I personally have no clue about how to withstand her fears and anxieties without joining in. I am about as calm as a Tasmanian Devil in my day-to-day existence, so the atmos round our gaff is probably never particularly calm.
Chin up, MrsS! Don't forget all those bottles of alcohol you have found.