Good to hear!

Studying comp-sci and physics are definitely worth it; economics is a much fuzzier discipline. It's common enough for universities to offer dual comp-sci/physics programs; I'd suggest she do exactly that.

It's really worth it to build a good base of math/comp-sci/physics understanding. Pretty much everything links back to it. I personally did part of a physics degree before dropping out to do Bitcoin full time, and I definitely think all that math was worthwhile.