Can it possibly be true that 60+% (she writes "nearly two-thirds") of women in STEM have this character as an influence? I'm only barely aware of this media property and here in Europe I feel our Media is fairly "American" still, does this show have such a global reach? I found, for instance, that the X-Files movie only had 4.2% of its revenue internationally, so I think its not such a popular property outside the US. How would even 10% of chinese female STEM workers hear of this character?

I believe she is citing the PDF she links, where only an archived version is available right now. It seems to be a US-only study, although I don't see any explanation of where participants were from.