Thanks all for the sage and understanding replies! To be honest, I think the option of going back to Japan and supporting my daughter should any problems arise back at school would be the better one. The UK is rapidly turning out to be a difficult and unfriendly place to live for a family.
I do worry a little that 2 years away from the Japanese education system might go against my daughter, but also think that we could bring her back up to speed through kanji and other lessons at home.
