I think Hodgkin's Lymphoma generally has a really high long-term survival rate
Yep. Especially the chances for children are extremely good. It's fortunately one of the less difficult kinds of cancer.
Being an atheist I doubt prayers would help, but send a really huuuuuuuuuge hug and a thumbs up!
Btw, if the kid has trouble with the side effects of the chemo/ray therapy: ginger works miracles against the nausea. Children often dislike the sharp taste of ginger but there are tasty versions like chocolate coated candied ginger or ginger-chocolate.
(I have 3 cancer cases in my family, hence I've developed into an expert on fighting side effects
If you'd trust us with an address or a PO-Box address, we could write get well soon letters for the kid.
Or we could write them, scan them and email them for you to print and give to the boy. It might cheer him up. Positive thinking, the docs say, increases the healing chances massively.