Sgt. Sykes said:
Guys, seriously, you're being stupid here, not the girl.
This is a fucking PUZZLE game with fucking PORTALS. Not only not everyone is good at puzzles, but geez, PORTALS! Portals don't even exist in the real world. Of course it takes people a while to get the idea.
I mean seriously, do you really consider the concept of walking back and forth through space-altering vortexes so INTUITIVE that EVERYONE needs to IMMEDIATELY understand it? Seriously? Than you're the idiot, not that lady.
And for the record, that puzzle IS NOT intuitive. This shouldn't be the first puzzle in the game. Portal 1 did a much better job explaining stuff.