Team Trazzle for the win! Definitely!
I hope your DS is back home again before chemo starts again. Don't beat yourself up about missing the ear infection. I have missed at least two ear infections whereas I always try to be really alert to them. They are easy to miss, even doctors miss them. And if you don't miss it, you are often told to wait and see as it may be viral.
I know that you can set up a fundraising page with the Neuroblastoma Alliance UK. From what I have read about them, they can help with funding treatment abroad even if you have not raised sufficient funds yet, but then when more funds come into your fundraising account they will go to the Alliance or something like that.
It maybe a good idea to already start fundraising now or at least authorise somebody to start fundraising on your behalf as it may take a little while to ensure that you have enough money, not just for the treatment and all the travel but also for your family to stay somewhere etc.
I am now going to check my first ever Euromillions ticket (I don't hold much hope I must admit ...) but bought it just in case.
Hope that DD is feeling better soon, I find that ibuprofen based medicine (calprofen, nurofen) helps much better with the pain (and inflammation) than calpol (paracetamol).
Hopefully you all have a good day today. Team Trazzle for the win!