They ended up taking their dirty clothes and washing them in the water like the people do at the side of the River Nile. Then putting them back on again. Emmy had just got some new Joules wellies which had a ruler marking on the back of them which can in very useful. So off the wellies used to come off to see how deep the water was.
I said they were like water nymphs. But then maybe they were just wood fairies. So after happily playing for over 2 hours with no fall outs ,they had fairy buns and a change of clothes and went home smiling .