Hi Zheng Yi,
I am really sorry to hear about your daughter and wish you all the best…
May be you already explored another topic in this forum about a bivalent vaccine:
The very first results look promising, but this option is a quite costly and a kid should reach a remission first.
There is also another option - DFMO, but I don’t know any numbers for relapse cases… I only saw that update:
http://lucacan.com/a-normal-life/
For relapsed neuroblastoma, 50% of the participants remain in remission after two years. A number that gives us a great deal of hope.
But this is just unofficial numbers…