where his civilizations, including our own

I do wonder if the girl was genuinely confused. There's the horrified "WHAT?" and the offended "WHAT?" and then the confused "WHAT?" But I guess since it doesn't seem like they talked about it she did do one of the above. I think if I was in that situation, even if my first reaction was a confused "What?" I'd want to know if this was something one could actually do. Because it's not like there's anything so strange about it.