Caught all three of them - mum and twins. I focussed on catching the ewe, put her in the pen, and then it was just a matter of waiting quietly until the lambs got close enough to catch too... took a while but I got them.
They are all definitely free from any maggots or eggs, I checked very very carefully. Relief!
I checked them all 3 times over, cleaned up the old crusty bits on her behind, treated the lambs sore patches with sudocrem (healing very nicely, all dried up), and doused them in more Barrier repellant.
Then I let them go. I really didn't think it would be a good idea to leave them in the pen overnight, if she tries to escape jumping (I know they can!) she might hurt her udder or something. I don't really have any better way to contain them at the moment. I also think being shut in, even in the pen, would stress them even more, and stressed animals are more suceptible to everything.
I feel much better just for knowing that my cleanup yesterday was indeed effective, and lambs look perfectly lively so I do think they are OK. Will keep a
very close eye of course