I've passed out before, so it isn't unheard of... I was feeling fine, though. [And therefore, not really sick enough to pass out without warning.]

Still, if someone could sneak into a girls' school like that, it's really a problem, isn't it?

[Political abductions are not unheard of, but this seems unbelievable for her despite that. Maybe she doesn't want to think about the impact this could have on her future.]